1. You ever seen how long it takes to make a new plane for AH? Go make one and get back to us on it.
2. This game is NOT what you think of as "historical." It's a balance (maybe not all that even) of fun vs historical. The three gun version of the LA7 was almost never seen, but it's in the game. B24s didn't drop a full salvo of bombs from 2,000 ft onto a T34 sitting on a spawn point either.
3. There is a scheme behind all of this. ToD is going to come eventually, and the corect planes need to be there. Remember; the Germans were there the whole war making planes like madmen, the US showed up in the middle and only made a couple airframes in comparison.