My new additions in red, I love debating this stuff!Good post, but there is more to it.
Some additions to your post:
1) There was no real war on two fronts when Germany invaded Russia. The British were holed up on their Island fortress, the US were not involved yet and would not really make their presence felt until well into 1943. Sure, there was some fighting in Africa, but Hitler never really saw Africa as a true front. Hence the horrific supply problems Rommel faced there.
Yep sure, but you also have to take into account the Mediterranean theatre-what delayed Barbarossa? Italy and its attempts at taking over large swathes of Africa/Balkans. The UK was actively bombing Germany in 1941, even if it was small what happened when Molotov visited Berlin to discuss the non aggression pact?
2) The US would have declared war on him anyway. But still, it doesn't help to pick a fight with a giant. The US needed to be shoved, there was clandestine help [protection of convoys, Land lease but the US would not declare war unless it was threatened. Isolationism was rife, this had a major issue of the 1940 elections and the US had to tread very carefully.
3) The Russian officer corps WAS a mere shadow of what it was, thanks to Uncle Joe (Stalin). Stalin had singlehandedly almost lost the war before it even started.
Absolutely but Mongolia was a reminder that the Russian officier corps was not completely devoid of talent-Zhukov anyone? The cuts allowed talented officiers to shine and once the invasion started many were let out of the gulags to fight again.
4) The Germans learned that the Russians were unafraid of large amounts of casualties very quickly. Beating Japan was no big feat though. The Japanese army in central Asia wasn't their best and even the best Japanese troops were not comparable to the Russian and German juggernauts. The Japanese had cookie jars with tracks for tanks...
Yes, but the method of destroying the Japanese by the Russians spooked them so much after their outstanding victories in 1905 they never threatened the USSR ever again-a big issue for the Germans.
5) Yep.
6) Something like that. It's a little more complex than that, but it sums it up.
There were more reasons and Germany could have beaten Russia in 1941 (which was the plan anyway).
Here's a hint, look at dates.
7. What also lead to the German defeat was what started happening in November 1941 also. The worst winter that century hit the Germans who had not been allowed to prepare for the winter nor had they thought about it properly. what had happened before this was torrential rains also that turned the ground into mud and stopped the movemnet of an essentially horse drawn supply chain. Chaos!