oh and as for who would win Germany or Russia...hmm
i think the Soviets would have won but the war would have lasted much longer. The germans would have captured Moscow..but the Soviets would never surrender just because Moscow was captured...i think overtime...the vastness of Russia and the neverending supply of Men would have slowly ground the germans to a halt.
Eventually the germans would slowly be pushed back as the soviets grew in strength.
The only way for the germans to have won was to destroy the Soviets ability to produce weopons..whether this would have been realistic i don't know enough to say. But for the germans to win they would need to kill their industry. Otherwise the soviets would eventually have overwhelmed them.