> I believe there was another power to first capture Berlin (that also was good at mass producing).
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.
"I just saw a video claiming something like 2/3 of vehicles the Russians used were made in the US."
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.
The USSR had already reached Oder (less than 70 km from Berlin) around the time the Battle of the Bulge ended. They stopped there for over two months to regroup and to secure their flanks, rather than advancing on relatively undefended Berlin. While taking the capital early would have been a symbolic victory, the Soviets didn't believe it would be enough to end the war at that point.