Aren't the 190D-9, 109K-4, KI-84, and N1K2 some of the best planes in the game? Artificial balance like perks could always be used.
If "MA settings" means MA gameplay, i.e. capturing bases, smashing factories and winning the war... then you would have to look at the whole planeset.
And in bomb delivering, the allies are lightyears ahead:
B-17
B-24
B-26
B-29
Lancaster
Mossie 16
vs
Ar 234
Ju-88
He-111
Ki-67
G4M
And add to that the Jabo aspect.
Even worse, CV planes. Kate and Val vs TBM, SBD, F4U, F6F
There is no amount of perking that can offset this unbalance if you are looking for a MA gameplay experience.