Ancien Regime
Banned
3. The UK mobilized itself far more effectively than Germany did. Once the US gets in, it is unbeatable even if the Uboats can fly through the air.
this is actually untrue but your other points are absolutely right
if we're comparing simply the british isles against the Grosdeutche Reich, then the Germans probably match or exceeded their level of moblization (the idea that Nazi Germany was fighting with one hand tied behind its back before Speer came to save the day was pretty comprehensively demolished by Tooze), but the colonies and US aid decisively tipped the balance.
Again, this thread is more or less pointless; the only way Germany could win the war was if Stalin handed the Reich all of Russia up to the Urals out of the kindness of his heart.