Oh boy, here we go again...
IL2 Flight model blows, graphics are good. You can fly a 190 and a A6M and they feel the same.
I'll respectfully disagree here. When I fly AH after playing another flight sim, there is a way in which the aircraft feel the same, but that is because AH has a distinct feel. Il-2 also has a distinct feel, but after you've played it a bit, you laugh when people say the aircraft feel the same. AH has the riding on rails feeling, while Il-2 feels slippery (best analogy I can think of). Both have excellent flight models in my opinion, and I've played more than a dozen flight sims since the late '80s.
Secondly, with the latest Il-2 mods, e.g. HSFX, AH is still way behind in graphics, especially with clouds, fires, and optical effects.
I also think it's silly to compare the two sims too strictly because what they offer is so different. Il-2 does not have MMP, AH does. Many Il-2 servers offer historical matchups with semi-accurate maps (some with snow or desert), goals for each side to accomplish, etc.; AH offers big fictonal maps where almost anything goes.
Edit: I forgot to mention that gunnery is more difficult in Il-2, and that makes a big difference for gameplay. While it's no big woop to see someone land seven or eight kills in AH, I get excited over three or four (human opponents) in Il-2.