Well, somebody who only knows how to fly an a6m and a hurr2 isn't really much of a pilot, is he?
I mean it's all well and good to fly 2 of the buggiest planes in the game, but when all you have to do is spiral dive to avoid incoming fire or to pull the stick back into your belly button and press the trigger, it's really not the same as, say... getting kills in a p40, or a ki61 or something.