This is such a popular misconception I really don't understand. Russia was so entirely dependant on the US for their logistics in WW2 it's shocking how little it's talked about. They were supplied American food and trucks in mass. Without the help of American supplies Hitler would of beaten Russia. Then once the Western front was more of a threat the Russians were able to surge forward with their mass of bodies and utter disregard for casualties.

The Russian army has always been a joke. Brutality and lack of regard for human life is their strength. Theyre like the big dumb fat kid who bullies people in school. You get in a real fight with em and it quickly becomes obvious they haven't ever done cardio (logistics, supplies) and there's very little muscle mass (technology) hiding behind the fat layer (overblown specs and lies about capabilities).