Exactly. And the USSR built more tanks than all the other allies combined, while under bombardment.
Y'all, it's true historically that the US has oversold its personnel contributions to the European theater, but overcorrecting with this weird nonsense about the USSR single-handedly winning WWII is just beyond bizarre.
The USSR did the most in that war but they were not in fact capable of winning by themselves.
Germany got pretty close to Moscow. A little different of a tactical situation would have been a big deal in that theatre of the war.
That does not mean anything. A car's engine contains only 10% of the parts in that car.