I have and I think Oleg is brilliant. However, his flight model physics he's used since IL-2 version 1.0 years ago, hasn't really changed much but the products are VERY different. Oleg's done a much better job with cockpits, environments, and damage model. Dale and Doug however have done a brilliant job with s flight model which, just makes this a different game.
You cannot compare IL2 and AH. They are two different engines with two specific purposes. IL2 is not meant for MMO which means you can put a lot more emphasis on the machine it runs on. AH is designed for sending a lot of data (simpler the better) over the internet. Two different engines with two different purposes.
My sims I own (not all, but you get the picture)
Flight Simulator 1 (SubLogic on C-64), right up to Flight Simulator X Gold
Combat Fighter (C-64)
Jet Version 1.0 (Amiga)
Chuck Yeagers Air Combat
Hind
F-117
Janes F-15
James Apache
F-18
Su 27 Flanker 1, 1.5, 2, and 2.5
Strike Fighters/Wings Over Vietnam
Strike Fighter 2 / Wings Over Vietnam 2/ Wing Over Europe 2/ Wings Over Israel 2
Enemy: Lock-On (Su-27 3)
And I'm not the only one who flys around here Anaxogoras who've been flying flight simulators on PC's since they first came out. A lot of the AvA staffers are seasoned flight simulator enthusiasts.