My interest in these numbers, by the way, is to get an idea of what planes were actually main components of WWII. To me, if it was a plane that was a main component of WWII, it would be nice to have in the game -- even if it is less popular in the Main Arena than some late-war aircraft.
Also, I enjoy the special events (such as scenarios) enormously; and having the correct historical mix of aircraft in those is part of the fun.