Well, let's put it like this:
The N1K2 can do amazing things that cannot be done by let's say my favourite P-51B. If this is realistic I don't know, I'm not a pilot nor a historian nor an aeronautical engineer.
I suck in the N1K2 'cause I don't have the SA for dogfighting and I don't wanna die. This makes me pretty envious when I see people who can fight in it and land kills.
I am a shameless cherry picker and after 1.5 years of flying pretty reasonable while still being far removed from the real aces. This also means I'm an alt monkey. Furthermore I live in Europe so my K/H sucks BIGTIME.
The N1K2 is easy to fly, has firepower and ammo to spare. Lots of kills are the result, much more than you will get when you fly the P-51B like I do. I don't mind that, it's the playing style I choose. If I furball with my average skills I still get more kills in the N1K2 than in the P-51B.
So far so good.
However an example: I take off and climb to 17K. Takes a while. Fly to nearest NME airfield. Get two kills, glide back and land due to radiator damage. Take off again, do the same. get a kill and an assist, then collide with a D9 and die. During the same timespan I see one of the mentioned Japanese pilots land a 13 and a 8 sortie kill in a N1K2!!! To be frank, he must have been EXTREMELY lucky or UNBELIEVABLY good to achieve such a thing. I never encountered even an opportunity to do that, not even in a fully loaded A8, P-47, N1K2, C-Hog, whatever and the juiciest vulch ever.
I do not pass judgement, I only express my disbelief and considerable annoyance.