It's nothing compared to what it used to be. Back in AH1 you could fly an early D-11 and notice the stability compared to a D-40. Same goes for P-51B and P-51D. You used to spin into your tight turns MUCH more easily in the D pony than the B because of the razorback-added-stability.
Sadly, this and a few other things seriously seem to be lacking in current AH2. I don't honestly recall WHEN they went away, but it was AH2 or sometime in the early revisions of AH2 that it happened. The F4u became an uber spit, basically, and lost its torque instability, and some other issues similar to the P51/P47 lack of spins.