Just for context Allied tank production was 276k to the axis 67k. Most other production categories show similar ratios. Your tanks can be perfectly reliable, and superior in every way, but it will be hard to win a fight when you are outnumbered 4:1.
Even now, the emerging doctrine from Ukraine, and now Iran, is to fight using asymmetric production advantages. Ukraine is taking out multimillion dollar facilities and ships with five figure UAVs. Iran has depleted US air defense stocks costing billions with a few million dollars worth of drones powered by motorcycle engines.
Russia also build some tanks while being invaded, ~90k at the end of the war outcompeting german output at 3:1 (I suppose they are included in your allied 276k number?)
https://www.youtube.com/watch?v=vrclztGCg6M is a decent watch, though really only tells the "US out produced everyone" part of the WWII story.
I recall seeing a better article that talked about WWII tank production but I can't find it right now.
https://walton.uark.edu/clc/posts/when-supply-chain-is-the-b...
but there's really no winning when the enemy can put more planes, tanks, guns, boats and troops than you by a large factor, if they are even somewhat competent at using them.
Would Russia/China/US not use their nukes if in risk of being overrun by conventional forces of another superpower?
If I'm not mistaken, one of the factors behind their Eastern Front collapsing was how their tanks suffered major design flaws, from failing to start in cold weather and their electrical components being vulnerable to rodents.
Also, their inability to mass produce their tanks is a critical design flaw.
The whole point of the war for the Nazis was to conquer new land in the east (and destroy the bolshewists). They initially did not wanted to have war with UK or France or US. They wanted to fight with them against the inferiors. It was a racist war - the aryans against the slavs - to establish the right place for the aryans as rulers (it was also not so much about "german", it was about race).
Also it was not just the US fighting and winning against them - I believe there was another power to first capture Berlin (that also was good at mass producing).
And technically it was mixed. Some german designs were quite good, reliable and mass producible, others overcomplicated and too heavy. I doubt the war can be reduced to this question, nazi germany had enough weapons and its war industry was working full power, it was just so stupid to get itself into a war on all fronts (and for example declare war on the US in solidarity with Japan, but did not demand Japan to declare war on soviet untion in return).
The western front was a choice, not something they did not wanted to do.
Not so simple, they also divided the german population by aryan and non aryan tried to "improve" by breeding programms (https://en.wikipedia.org/wiki/Lebensborn) and well hunting down all "inferior jews" and less so other people like sinti and roma.
And it is pretty established that Hitler wanted the UK as ally (who have been pretty racist at the time as well).
See also the flight of Rudolf Heß, which he did to make a favor to Hitler. (pretty interesting story, showing the delusion of the whole thing)
Hitler wanted UK as ally, just like he wanted Russians as allies as step 1. The plan was not to treat them as equals in step 2. UK jist was not dumb to fall into that trap.
Rudolf Heß was his initiative and attempt to avoid war, he was very much in minority.
I think the honest plan was to accept UK as sea power and germany as the mainland power. Later .. open how things developed.
See also
https://en.wikipedia.org/wiki/Joachim_von_Ribbentrop
"I mean sure, it was about race, not about passport. "
But we agree it seems. I was just arguing against the common missconception of trying to understand the Nazis as Ultra-nationalists, while they were mainly thinking in racial terms. Not germany should have ruled the world, but the Aryans. (With germany at it's heart, but that was more a side point)
US sent tons of war material to the USSR as well as experts to help them get their manufacturing up and running. The success on the eastern front was partially due to US support. I just saw a video claiming something like 2/3 of vehicles the Russians used were made in the US.
also as far as who was first to capture Berlin... pretty sure the western front commanders decided/were ordered to slow down and let the USSR get some parts of Germany for themselves.
Considering that 90 000 tanks were produced in russia alone, I really doubt those numbers, as it would mean Russia would have had 270 000 tanks on their own.
Roughly 50-65% of Red Army's transport pool was US-made.