It is not quite that bad. The AI can be out-turned, out-zoomed, etc
Perhaps you haven't really explored it much?
I had a D3A Val out-turning, and out-looping my C205 for a good 5-7 minutes. It did about 10x perfectly vertical loops at about 250mph without ever slowing down. I was riding the blackout just to have it in my forward view, just trying to keep up with it.
C205, mind you, is about 100mph faster than the Val, climbs almost 4000fpm at sea level, and accelerates like a 109.
Yes, it IS that bad.
EDIT: Or try flying formation on the AI Fw190A5s as they fly at speeds so slow you can't match them without full flaps and reduced throttle, but they're cruising along nicely. Flight forces don't exist for AI, they just "move," they don't "fly."