[C. Edmund Wright]

The biggest flaw of Barbarosa was even attempting it. There was no way the Reich was going to win a two front war.

As for the T-34, I guess you could say that it was a war winning tank - but stepping back for a second, there was no way Germany would ever conquer such a large, mineral rich and populous country. If they hadn’t come up with the T-34, they would have come up with something else to overwhelm the Germans with.

And that’s what the T-34 did - over whelm with massive numerical superiority.

[Fiji Hill]

The biggest flaw of Barbarosa was even attempting it.

While still at war with the 700-million-strong British Empire, Hitler took on the Soviet Union, which is essentially a continent. A few months later, he declared war on the US, another continent-sized nation. What folk singer Carson Robison said of the Japanese can be applied to the Nazis as well:

So now, they want to fight.
Well, they've bit off quite a bite,
And Uncle Sam is going to make them chew it.

[17th Miss Regt]

but stepping back for a second, there was no way Germany would ever conquer such a large, mineral rich and populous country.

I disagree. They nearly did conquer it in 1941 and came close again in 1942. Stalin put out peace feelers more than once in the first two years.

[Valin]

“The biggest flaw of Barbarosa was even attempting it.”

Yup. Large nations rarely get conquered.