Spoiler alert... Stalin's bullet catcher plan beat Hitler's popsicle plan. Better not to be a bullet catcher or popsicle, but -- Stalin and Hitler.
Sometimes more less-trained soldiers beat fewer more-trained soldiers and more weaker tanks beat fewer better tanks. And sometimes the other way. But as no armies are ever completely equal, it is going to be one or the other.
That may seem trite. But I mention it because it IS going to be one way or the other and you never can tell.
Hitler probably trained better soldiers and built better equipment, but at a cost. Better trained soldiers require more resources and better equipment is more expensive to build. But the German-Soviet front was even more complicated. It wasn't the generals who controlled the war, it was the dictators who imagined themselves to be great generals. Neither Hitler nor Stalin were great generals.
At the climax, it turned out that Hitler was slightly worse at generalship than Stalin. It doesn't take much of a difference when you are talking about millions of soldiers and tanks.