I disagree somewhat. Of course a large part of the Luftwaffe was fighting on the Eastern Front but the end result would have been the same. The western allies would have defeated the Luftwaffe even if it had been twice the size. You see, the problems were still the same: the western allies had better pilots and to a lesser extent better high altitude fighters.
Kris
Its not a matter of what the end result might have been. The Western Allies alone probably would eventually have clawed out air superiority just as its feasible to conjecture that without D-Day, Torch, or Husky, the Russians would have eventually clawed their way back to Berlin. Its a matter of time and casualties. In the airwar's case too, one also has to factor in the bomber force as well as the fighters. The Western Allies' job was achieving air superiority was made infinately easier by not having to try to eliminate the Luftwaffe's bomber forces in strength at the same time they were conducting their stragetic operations.
My point thus, was that when discussing the downfall of the Luftwaffe, one cannot discount the VVS's contribution. Without it......it would have been far more costly and time consuming for the Western Allies, regardless of what specific plane type is being forwarded.