Great post Schweik, as you say all aircraft are superseded, however the Spitfire was a frontline competitive aircraft at the start of WW2 Sept 1939 and at the end Aug 1945. There were times when it was down against the opposition but not by much. Wars are won by crucial battles, the Spitfire won two, the BoB and the Malta, and played a major part in many others if not to win then to avert disaster. I am constantly perplexed by the argument about range. Apparently being able to fight 200 miles away is much more important than being able to fight at 20,000 ft. That is an attitude of someone who certainly wasn't a resident of Kent's airfields in 1940. From first to last the Spitfire series were almost completely changed, but so were the P-51 and P-47. Some events like the Spitfire intercepting German recon planes above 40,000 ft may seem inconsequential. However in the run up to D-Day German Recon could only be allowed where the allies wanted.
Nothing about the Spit is inconsequential, trust me. I am certainly not one of the people who thinks its overrated. They had a problem in 1942 with the deadly Fw 190, but they fixed that pretty much for good in my opinion, with the Spit IX. One of those brilliant "Stop Gap" design measures that ends up being a fantastic home run.
Do I think altitude limitations are more important than range limitations? I don't know, I think they are both limitations.
The altitude one seems to be more widespread, I'm learning, than I had originally known. The fighter best known for altitude limits was arguably the P-40, then the P-39, and then the various Soviet fighters. But I have learned that these issues affected many others. Correct me if I'm wrong but I thought one of the issues with the Spit V as it faced the Fw 190 was that it's performance declined a bit at altitude whereas the Spit IX with the ingenious Merlin 60 series and two stage supercharger drove like a Lion up to a much greater height, which helped (along with the sheer increase in horsepower) improve speed and overall performance up high. This is my understanding anyway.
The Fw 190 itself also eventually faced altitude limitations as the Allied fighters with turbos and two stage superchargers spread, and it too suffered from that deficit, requiring the development of the elegant 190D but a bit too late.
Range does matter IMO, if you can't get to the fight you can't affect the outcome. I think this was the reason why the A6M was so good, or more precisely the combination of range, performance (esp. climb) and maneuverability. But yes I do think range is a very important feature for a fighter.
Which one matters more depends on the Theater doesn't it? On the Russian Front, altitude capability made little difference. If it did the MiG 3 would have been the hero. Range didn't matter that much either. In the BoB altitude mattered but range didn't as much (better range would have helped though particularly for the Germans). In the Pacific range was much more important and is the main reason the Spit didn't really excel there and a big part of why the A6M did. Over the heart of Germany again, range mattered. And I object to the dismissal of the P-51 as a flying gas tank, that is a bit absurd.
I think fighters with different capabilities are also better or worse for certain roles. The Spit was the best allied interceptor, bar none. The Mustang was the best escort fighter, though it came late and that matters too.
I like what you did by pointing out that the Spitfire won two key battles, BoB and Malta. Here are a few which occur to me:
The A6M, the D3A won Pearl Harbor, and (with the G4M etc.), the first Battle of the Philippines, the Battle of Singapore and so on.
The Bf 109 and the Stuka won the Battle of Poland and the Battle of France.
I would say that the F4F and the Dauntless won Midway, Coral Sea, and Guadalcanal.
The F6F won the second Battle of the Philippines.
The P-40 won the (air) Battle of Burma and China
The P-40 won Milne Bay and Darwin and the Kokoda trail, (which together form the BoB of Australia.)
I would say the P-40 also helped win El Alamein and Tunisia but not alone.
I think the Yak-1, the P-40 and the P-39 helped save Leningrad and Moscow for the Russians. Credit for that also goes to the Il-2 for the battle
after Stalingrad. The Il-2 certainly helped win Kursk.
S
The P-47 and the Typhoon helped win the Battle of D-Day