Slight misconception there. At the end, the Germans had to spend 40% of their economic potential trying to defend the Reich against the the 8th Air Force. That's what let the Russians beat them, or at least beat them when they did.
I had an Uncle who fought at the Battle of the Bulge, and was just a few lines back in the column behind Patton when they walked into the first concentration camp. He would have disagreed about the Russians being responsible for the defeat of Germany.
They played their part. But so did we and the Brits. Russia would have never prevailed alone.
