Personally, I'm not going to be nice to iEN just because I happen to fly their sim. If there's something I don't like I'll tell them. The only thing I've ever said about AH is that, when I did try it a few years ago, it sucked. That's all I've said because that's all I know. However, just so you know, I tried Warbirds around the same time and it wasn't any better (or worse, in my opinion).
I did download AH again a few months ago and, while I didn't spend much time flying it offline (maybe 10 minutes?), I did notice that gunnery seemed much easier, the tracers were extremely bright (as they are in WB, though a bit more so), and the flight model seems pretty decent. Whether the aircraft are accurately modeled is something I couldn't say, but the physics modeling itself seemed fairly solid. WWII Online though, in my opinion, has the best physics engine, they just don't have anything else at all going for them. Damage modeling is truly despicable, aircraft performance accuracy is totally out the window, and so many other things are wrong it's impossible to count them. Sad that such a promising project went straight to toejam.