Ki-84 in WB was filled a similar ecological nich as the Chog. In short, it was a frigging menance. A mediocre pilot could give you a hard time, and an Ace was lethal.
Not unbeatable though. Compresses at high speed, can be beaten in a stallfight by some others. Relatively fragile. But the sweet-spot on this plane is huge, and within that envelope it'll cause grief. Fast, agile, well armed, nifty little red dots on the wings, some Diamond Sake just to the left of the pilots seat, and drop a notch of flaps (it had turnflaps) and it becomes a semi-decent stallfighter. I could kill it at those speeds in a 110, but then I actually did ok stallfighting in the 110.
My highest streak was 94, in a Ki-84.
Thog