I can confirm that japanese players are very good and skilled pilots; its not fair to point at them all if you noticed someone of them warping.
More, some Japanese fighters (N1K2) have a flight model , in AH, that allows them to do fine maneuvers, and if you put them in skilled hands they can do wonderful things. Its a problem of the FM , not of people who fly that plane.
And BTW, .....I'm sure our japanese friends will greatly appreciate if you refer to them , more correctly, as Japanese and not..... Japs.