Some people would argue that EAW still holds that title :p
That said, IL-2 is definitely the finest technologically-up-to-date WWII sim out there
EAW was a great game, but IMO IL2 does all that and even goes to much more detail. Tho, what I really liked in EAW was the westfront that is not in IL2. But then again, the Storm of War will fix that.