Hey TD can you look again at the Corsair..

[Luno13]

The Ki-84 was not around in huge numbers or with enough good-quality fuel to sustain its performance like in Il-2. The top speed of ~400mph is TAS. Il-2 Compare states this is about ~418mph in the game at 6000 meters. At sea level, top speed is only 356.

I really don't think there is anything wrong with the Corsair. Choose your fights wisely.

However, I do agree that the Zero dives far too well, and probably has a too good roll-rate at the top end of the envelope.