I don't understand, what favoritism against 'US planes'...?
The best planes right now in FB are the P-47D-27 w/150 octane fuel (P-47D). It puts the AH P-47N to shame. They have 5 versions of Mustang. P-51b, P-51C, P-51D-5, P-51-D20 with gyro site and Mustang III with 150 octane. We do a regular thing with the 4th FG. I don't fly P-51s so we were talking on TS with one of them discussing allied planes. He said that with out a doubt the Mustang is the best Ami dog fighter in that game. They are good enough to prove it. In FB there's a much wider variety of Ami planes to choose from then AH. There's over 5 variants of P-40. There's P-38late with 1750HP per eng. The thing is a monster.
In the Pacific they have more F4Us then AH (including the chog and RAF variants) the have 2 F6Fs which I will fly both of those because they awesome fun. P-40s and P-39s are very competitive etc... (they even have the P-63). I fly allot of the Zekes / F4F server and its a lot of fun flying both sides. I never fly any Ami planes in AH. I don't think they are fun. OTOH in FB I would fly the F6Fs as much as possible.
They have so many variants of Spitfires (even one with 25lbs boost). Then there's the Tempest despites it 9lb boost (the big whine is that the RAF got jipped because it doesn't have 13lbs boost) is fun as hell.
We've been primed well vs the LA7 waves in the MA.
Fly on a map with La-7s in FB. They would whup AHs La-7s arse...
Folks complain over there about Mustangs not being able to dogfight like spits (mostly this is due to how the model the fuel tanks). They complain about .50 cal asymmetrical recoil, they complain about everything under the sun. Then there are others who fly them and kick arse and have fun doing it.
BoB will have 6DOF like AH and should be a lot of fun.