No it wasn't.
ack-ack
Care to elaborate then? If you are going to call me out I'd at least like to hear your claim, that is if you have one.
Spare yourself from using our cartoon models to prove anything though, let's use some real history here.
From any of the sources I have read from as far as american avionics, American planes have always been built around the principle of speed and firepower. Maneuverability was never at the top of that list, until the F-15. Maybe in WW1? I dont really know, I know very little about American WW1 Aircraft. So If you can prove me wrong, please teach me something, I'm interested. No sarcasm intended.
You said NO AMERICAN plane was manouverable before the P-51. I respectfully disagree.
No, I said no american aircraft was built primarily to be maneuverable before the F-15. I wouldn't consider the P51 to be a 'maneuverable' aircraft. Disagreeing is completely fine, I'm no expert by any means, but I would like to know why and what plane because I'm interested in hearing other opinion/fact.
And yes, every plane has flaps. But some planes, like the spitfire, do not use them in combat to better their rate of turn. In game, pretty much every american plane does, as well as many others. Many of these planes, to my knowledge, used them much differently in real life than they do in this game. That was the only point i was trying to make about flaps.