These sort of questions always become ones of opinion. Even if there was some across the board type of score sheet aircraft do not fly themselves. The pilot is an integral part of the question. A superior on paper aircraft flown by a mediocre pilot vs. an inferior on paper aircraft flown by a skilled pilot. Naturally one cannot go to far with such comparisons and one needs must consider numbers. German Industry in the middle of the war could never match the industrial might of the US safely out of the actual war. A Tiger tank could kill 20 Shermans and still loose. German desparation also led to them putting their best pilots on the front lines where they sooner or later were killed unable to pass their knowledge and skills to new pilots
That being said:
The development of the FW-190 began with a contract in 1937 from the Reichsluftfahrtministerium for a new single-seat fighter. The new plane was designed by Focke-Wulf engineer Kurt Tank, a German aeronautical engineer and test pilot. He was chief engineer in Focke-Wulf's design department from 1931 to 1945. He was not only responsible for the development of the FW-190, but also the Focke-Wulf Ta-152 fighter-interceptor and my model in progress the FW-200 Condor. The FW-190 was first developed as two different models, one using the water-cooled inline Daimler-Benz DB 601 engine and the other using the BMW 139 air-cooled radial. The BMW 139 was selected for development in summer of 1938. The first prototype flew on June 1, 1939. The BMW 139 produced 1,550 horsepower, attaining a speed of 370 miles per hour. Fairly soon the BMW 139 was replaced by the BMW 801, a new engine design with great potential but the new engine did have some problems. Powered by the new BMW engine, which produced 1,600 horsepower, the FW-190A-1 was armed with four wing-mounted 7.92mm MG17 machine guns.
First impressions of the new BMW 801 engine were not good. Test pilots reported: "The new twin row, 14 cylinder, air-cooled radial engine gave us nothing but misery. Whatever could possibly go wrong with it, did. We hardly dared to leave the immediate vicinity of the airfield with our six prototype machines," reported one pilot. The project came close to being cancelled but most of the problems were corrected and the plane was cleared for service in July 1941. The FW-190A1 used the BMW 801C, 1600 horsepower engine, which powered a three-bladed variable pitch propeller that could attain a top speed of 388 miles per hour. The wide-track landing gear folded in toward the fuselage, which was extra strong to accommodate future weight growth and offered good stability on the ground. The FW-190A1 carried four rifle-caliber machine guns, two in the cowling and two in the wing roots, all of which were fired through the propeller arc. One of the major changes made by Tank and his designers was in the FW-190's armament. They replaced the inboard MG17s with two 20mm FF cannons. The modified fighter now had the designation of FW-190 A-2 and took the Royal Air Force completely unawares with descriptions of the plane being discounted by British intelligence.
The FW-190 first saw action over the English Channel in 1941. In February 1942, it was providing cover for the German battlecruisers Scharnhorst and Gneisinau and the heavy cruiser Prinz Eugen as they tried to reach northern German ports. In one engagement, the 190s destroyed all six attacking Royal Navy Fairey Swordfish torpedo bombers. The new fighter was faster and more agile than the Spitfire. The FW-190 was a stout opponent in a dogfight with its extremely heavy armament. The FW-190 pilots tended to work in pairs, giving each other good tactical support in battle. The excellent visibility provided by the plane's cockpit assisted the pilots in supporting one another. As time went on, the FW-190 became a severe threat to Allied aircraft in every region where the Luftwaffe was active. It inflicted huge losses on B-17 Flying Fortress and Consolidated B-24 Liberator bomber crews, and was almost impossible to stop until the long-range P-51 Mustang came into service in 1944 and began escorting bombers to their targets.
The new aircraft might have had an even greater impact on the air war but for one error. In June 1942, a Luftwaffe pilot accidentally presented an intact FW-190A fighter to his enemies. Oberleutnant Armin Faber landed on what he thought was a Luftwaffe airfield on the Cotentin Peninsula that turned out to be the RAF airfield at Pembrey, Wales. As he slowly taxied to a stop, Faber was totally surprised when someone jumped on the wing and pointed a pistol at his head.
The RAF quickly transported the aircraft to the Royal Aircraft Establishment at Farnborough. The airframe and engine were dismantled and thoroughly analyzed before being reassembled. After being test flown the plane was delivered to the Air Fighting Development Unit at Duxford, Cambridgeshire, where it was put through intensive performance trials and flown competitively against several Allied fighter types. The AFDU trials had proven what the RAF already knew, that the FW-190 was an outstanding development in fighter aircraft.
The detailed examination of the FW-190 had a huge influence on fighter development in Britain. It resulted directly in the specification F.2/43 to which was designed the Hawker Fury, which incorporated numerous features directly copied from the FW-190A and F.19/43, which produced the Folland Fd.118 fighter project.
In 1943, the Luftwaffe needed a fighter with better high-altitude performance. The answer was the long-nosed "D" model or "Dora." The first production model was the FW-190 D-9 which attained production status in the early summer of 1944. The new plane's purpose would be to face the Allied bombers, particularly the American Boeing B-29 Superfortress, which was known to be coming into service. The FW-190 D was the first production FW-190 to use a liquid-cooled engine and was a very good high-altitude interceptor equal to the North American P-51 Mustang or Supermarine Spitfire MK XIV. Deliveries of the FW-190D-9 began in August 1944. The first mission of the new fighter was to provide top cover for Messerschmitt Me-262 jet fighters during takeoff when they were most vulnerable. The prevailing opinion among the FW-190D-9 pilots was that it was the best Luftwaffe propeller-driven fighter of the entire war and was more than a match for the P-51 Mustang. Experience gained with the D Model led to the development of the high-altitude Focke-Wulf Ta 152. Ta was in honor of Kurt Tank. The inline engine fighter was going to be the top version of the now famous fighter, but delays prevented them being manufactured in adequate numbers. In the final chaotic year of the Third Reich only a few Ta-152Hs and possibly a few Ta-152Cs got into combat.
One of the more important roles played by the FW-190s was in the defense of the Reich. The first month of the air campaign ended with the raid on Wilhelmshaven on February 26, 1943. In this phase of the campaign, the fighting ended in favor of the Luftwaffe, which downed 15 heavy bombers from the U.S. Eighth Air Force while it suffered seven pilots killed and one wounded. On March 4, the FW-190s played a major role in attacking a group of B-17s whose target was the marshaling yards at Hamm in North Rhine-Westphalia. Four of the five bombers were shot down in the Eighth Air Force's first appearance over the Ruhr, Germany's industrial heartland. On April 17, the Eighth Air Force returned to Bremen, but this time its target was the city's Focke-Wulf aircraft factories. These were producing the very FW-190 fighters that the Americans were fighting in the air. During this raid the Americans lost 16 B-17s with 10 falling to the FW-190s. These losses were at least part of the reason that the Eighth Air Force did not reappear over the Reich for nearly a month.
In the second half of 1943, the Eighth Air Force suffered catastrophic casualties, but the defenders' losses would begin to escalate as the year wore on. In this period, the U.S. Army Air Forces lost 87 bombers and had more than 500 damaged mostly due to Luftwaffe attacks, many of which involved FW-190s.
The arrival of U.S. escort fighters in ever increasing numbers would dramatically change the situation. The Luftwaffe pilots would no longer have the luxury of remaining unmolested beyond the range of the bombers' defensive fire and then deciding how to deliver the attack. Protected by their fighters, the bombers would be much more difficult to approach, and kills would become more difficult to achieve with losses inevitably becoming much higher.
The number of fighters escorting Eighth Air Force bombers would eventually exceed 500. One method which the Luftwaffe began to develop to counter the increased number of enemy fighters was to have the Me-109s keep the enemy fighters occupied while the FW-190s attacked the bombers. The Luftwaffe also transferred many of its most successful pilots closer to Germany to defend the Reich in the most critical campaign of the European air war.
By the end of 1942, the FW-190 was fighting in North Africa, on the Eastern Front, and in Western Europe. In the Soviet Union, the FW-190 was effective in low-flying ground attacks on vehicle convoys and tanks. In this theater, the FW-190 carried 250- and 500-pound bombs, either of which could knock out a tank. One major issue on the Eastern Front was keeping the FW-190s and other aircraft supplied. This was at a time when many of the planes were flying up to eight sorties a day. On the Eastern Front, the FW-190's reliable air-cooled engine and wide-track landing gear were well suited for service in the extremely harsh conditions. Operations on the Eastern Front led to a number of changes that resulted in the FW-190F fighter-bomber designed with a special emphasis on ground attack. This particular version carried 794 pounds of armor, which included sections of steel plate located behind the pilot's head, on the lower engine cowling, and in the wheel well doors. The F-8 version turned out to be the most important model of the "F" series. Frontline units, using kits supplied by the factory, could adapt these aircraft to carry various combinations of heavy cannons, bombs, rockets, and even torpedoes.
As the war went on, the different models of the FW-190 were in almost constant contact with enemy bombers. This led to improvements in the form of more cannons and underwing rockets. Later, bomb racks were fitted to the FW-190 airframe under the fuselage and under the wings to broaden the capability of the fighter for attacking ground targets. By the end of the war, German fighter airfields were forced back closer to Berlin for fear of being bombed, which resulted in the FW-190 becoming more of a ground attack and support aircraft as German air power dwindled in the final days of the war. The Allied bombing campaign reduced the number of FW-190s, and the added issue of pilot attrition only made the situation for the Luftwaffe much worse. The end was in sight.