German tank and aircraft design and logistics had their own issues that made things worse, but largely, the biggest issue was just not being capable of keeping up with American manufacturing and Russian willingness to throw bodies at the fight.

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.

Wars between great powers are won and lost on manufacturing base. The classic book on this topic is https://en.wikipedia.org/wiki/The_Rise_and_Fall_of_the_Great...

It is and isn't. I think even if the germans had switched to making mass quantities of Sherman or T42 style tanks, it would have failed because they had shortages things like labor and fuel. The allies essentially had huge industrial bases in the US and Russia that were safe from the threats of bombing and attacks. The entire German supply chain from the factories to field repair sites were constantly being attacked.

"Besides, they mostly lost because they spend all their manpower and material on pointless incursions far away from their country."

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).

> Besides, they mostly lost because they spend all their manpower and material on pointless incursions far away from their country.

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.