In any case, the Sovs don't really have much experience stopping a Blitzkrieg, Stalingrad included. The Germans outran their logistics, and we nearly did the same. But we solved the problem and the Germans did not. And we avoided known seasonal weather difficulties and the Germans did not. And we won, and the Germans did not. Runner-up is not an entirely comfortable position when the Red Army's knocking on your doorstep...or the Third Infantry Division, either.