Ya, Oleg also said that the FM's for the IL2 aircraft were correct-didn't make it true. It took the mod community to create FM's that were even close to achieving the tested performance of the modeled aircraft.
And I'm sure the same is true here. Sorry, but a 109E topping out at 440-450 kph at sea level is about 50kph to slow.
See here: performance at 1.3ata demonstrated to be 498kph at sea level and 572 at 4800 meters.
And this was done with an E-1 prototype which did not have the later style, more efficient air intake and thus the performance of production E series types would probably be higher.
http://kurfurst.org/Performance_test...w_109V15a.html
Even better, here:
http://kurfurst.org/Performance_test...chreibung.html
Quite a bit more than we get currently.
So complain all you want but the hard data backs that the 109E is substantially under modeled, as are just about all aircraft in game, with the obvious exception of the Spit IIa.