[F4U-1_Corsair]

sorry to say, but I have never encountered this, indeed, if anything I've found the AI to not be as efficient.

for example, I can out run a AI bf109E4 in a spit mkIV on the deck at least

I can outrun a A6M2 in a wildcat

and lastly, I almost always end up blowing by the Bf109 I was chasing when it goes into a dive, while I am in a P47

My assumption is simply that a AI plane often is flying as if it is perfectly trimmed, and therefore isn't losing any speed through minor course changes that a human without trim is subject to. Properly trimmed in level flight you can often out run a plane slightly faster than you who isn't using trim. In a dive, in a P47, look down at instruments and see how much the torque is causing you to fly kind of like in a sideslip. At least in a corsair, at around 700km/h the ball has been shoved all the way to the left. (Thats not in a vertical dive, so it still reads properly)

As to the turbulence, they are effected, just they have lightning fast reflexes to counter it and remain on course. you can notice their control surfaces fluttering while on the deck