No, you misunderstand me. I'm not really saying there was any Napoleon-tier general one way or the other, just pointing out that a million men is absolutely worthless, it wouldn't make a damn bit of difference if the Nazis had a million or even 10 million extra grunts, grunts are just bullet-catchers. Their purpose in modern war is to force the enemy to expend time and resources to deal with them, but that's all it is. Fighting a million extra men is just like, "Okay, so we'll have to dedicate 12 days to that, and it will tie up between 10-15 divisions and dah-da dah-da-dah."
Infantry is just a way of dragging things out. It's just pesky, it isn't going to make or break a military operation.
A general, even a mediocre one, is worth something, but a million men is like saying you have a million bullets. Okay, great, but without men and rifles, bullets are as useless as rocks. Without a competent general and officers to manage a million men, a million men are just as useless as a million poker chips.
A million men, ten million men, a hundred million men, it's all just clutter.