ORIGINAL: Yaab
Consider a alternative history scenario. USSR stays on the sidelines, neutral to the Third Reich and Japan. She entices a global war of Germany/Japan/Italy vs USA/UK/China. USSR waits for Germany/Japan/UK/Italy to bleed themselves white. I guess then even the American aircraft industry wouldn't be able to keep up with the losses.
Too many variables. Germany under Hitler saw its needs for space as coming from the East. Hard to imagine the Soviets sitting on the sidelines while this took place. And if Germany did not move east-where would they get the resources to fight the West. Much less the food-as Germany was never self sufficient in food. Look back to WWI.