I'm comparing planes not pilots.   The wing area of the Hellcat was the largest of ANY WWII single engined plane.    
The piss poor production numbers of FLYABLE Nik2-J's do not even allow this fighter to "hold such a title".    Japan chose to start it, they paid in spades.   They banked on "nimble, fast, tight turning, unarmored cockpits and un-sealed fuel tanks" on almost every plane, and it was their undoing.    The US had superior planes to counter ANY Japanese plane produced.