Ooops! Be very careful mentioning the dreaded "kill ratio" as there are people lurking in the shadows, ready to challenge what actually constitutes an aerial victory and whether or not it even has a place when talking about which aircraft was the "best dogfighter".
I really must challenge this post. Firstly, I do not "lurk" I read posts, and this is a forum. Kill ratios are what they are, whether they are important or not becomes clear later when the war is over. In a war you have battles, you have conflicts and you have skirmishes then sometimes you have a rout.
This is an aviation forum and so importance is given to aviation operation but there were only a few cases where aviation was decisive. If the Me109 had its historic kill ratio over England (as the nearest part of UK to France) and Malta then history would have been much different. It didn't, so whatever it and the FW190 did is of no importance in the western war because the LW and Germany with the Axis powers as a whole lost those critical battles, and even though Malta was an air battle it was also a sea and submarine battle too. In the Battle of Britain on Fighter versus fighter kill ratios the LW won, but they didn't win because they achieved zero. At Malta the RAF losses were high and Malta was the most bombed place on earth at the time but LW air power did not prevail. The Axis military (remember Italy was also involved) were driven out of Africa eventually while Joachim Marseilles was becoming a legend. However the LW in Africa were only ever fighting their own private war and a rearguard action, their fighters were trying to stop RAF and later USA fighters, fighter bombers and bombers.......how many bombers did the LW have in Africa, despite their high kill ratio it was just desperate defence.
For the war in the east I have my own theories and ideas, here is the gist of it, though I have not read extensively. In the Battle of Britain (and many conflicts) the majority of kills were where the victim was caught "unawares". In Operation Bagration the LW had 600 aircraft while the Russians had 7,000 aircraft on a front that was well over 1000 miles long. Below on the ground the Russians had 6000 tanks and assault guns and the Axis had about 600. It may be callous but Stalin was callous, the loss of a fighter pilot was no more significant to him than infantryman or tank commander, he was concerned with winning ground not a kill ratio.
In the war in the Pacific, although in principle the Japanese were in a losing situation before Pearl Harbour, if Midway, Coral Sea and Leyte Gulf had run differently then history would be different. Those battles were not really won or lost by the aircraft performance but by decisions made. However, if you consider that the US torpedo attacks were unsuccessful because the torpedoes didn't work, imagine what would have happened if the dive bombers bombs did not explode either? Don't laugh, that is what happened in the Falkland conflict almost 30 years later.