I think the original poster is most likely right, when he states that the FW is also not totally correct.
I quote something what a dev said on the other forum, regarding the P-51 issues:
So last updates: we have found some issues, that were indeed in the game. Long story how it happend, but it is fixed.
Also, good guess from you, guys, helped us to increase performance of P51 - it has full fuel tanks, and this decreased it performance.
He says there were some issues in the game that they now fixed. AND the P-51 has full full tanks.
since the fuel tanks are mentioned after an ALSO, it indicates that there was more wrong than just that. 'the issue in the game'
this 'issue in the game' could very well affect more planes. And maybe the fuel problem of the P-51, is also in other planes.
Anyways, apart from all this, I think the best 'evidence' that the FW190 is not correct is this (quote a dev again): All flight models were taken from PC IL-2.
the FW190 flies way different (better!) in the PC IL-2 game. Since the FW190 flies different in this game, it means that there is a variable, that affects the FW190. decreasing its performance. so i think this will be fixed when they fix the thing that affected the P-51.
the difference I notice between the PC IL-2 and BOP: planes like the P-51 and FW190 (and more BnZ planes), really lack the acceleration, and performance at 'higher altitudes'.
In IL-2 you could really boom and zooooom, in BOP, you do not have the performance required for the zoom. chasing a Fw190 in IL-2 would be pointless, chasing a FW190 in bop, has a high chance of succes. it is faster then most planes, but just slightly, and it accelerates so slow, that the target plane has almost 30sec to shoot the passing 190 in its 'zoom'
hope this was kind of clear
and helpfull