Freeze, even though you are one of my squaddies i have to disagree with you.
I have brough up a lot of FW190 issues, but with all the questions i had regarding AH's FW190D9, we should not forget that AH has the most accurated D9 compared to any other Flighsim.
The things that need a look into with the D9 are (from my viewpoint):
-dive characteristics, especially compression and high speed elevator authority
-zoom characteristics
-roll rate, all FW should roll the same (with small differences in initial roll if outboard cannons are installed)
-actuall engine power curves for the AH D9, this is just a matter of interest, i would really like to know which power output ist used for WEP speed/climb and which for full throttle speed/climb
those are the points that need clarification, in some cases, such as zoom and roll, they are points that need to be cleared in conjunction with those performance issues on other planes.
On the other hand i thing the following points need no discussion anymore:
-speed/climb numbers are correct
-flat turning characteristics seem also to be correct