Agreed. Not only that, military historians who don't base their knowledge of the Eastern Front
solely on German sources, such as David Glantz [0] and Jonathan House [1], claim that when there was superiority of Soviet vs Germans numbers, it was because the Soviets successfully employed concentration of forces, which is a sound military tactic!
That is, to the German caught unawares, it looks as if there is an endless "Asiatic horde" (which was the fascist propaganda to explain losses), but what is actually happening is that the Soviets are successfully concentrating their forces by thinning them down where they aren't needed, and achieving greater numbers where they are needed. Good operational warfare that is, and the Soviets excelled at this. Also, a lot of the time the Germans were unaware of Soviet reserves, so that fresh forces would appear when they weren't expecting them.
The self-serving memories of Wehrmacht Generals mostly conveniently "forgot" about this, and so the myth of the endless Asiatic hordes was born.
There's a fascinating YouTube video [2] where House (Jonathan, not Hugh Laurie!) dismantles the three usual German alibis of why they were defeated:
1- Hitler interfered too much and was the cause of every blunder.
2- "General Winter".
3- "The Asiatic Horde".
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[0] https://en.wikipedia.org/wiki/David_Glantz
[1] https://en.wikipedia.org/wiki/Jonathan_House
[2] https://www.youtube.com/watch?v=zinPbUZUHDE