It’s really simple:
Capitalism vs socialism is well demonstrated in Boeing B-29 vs Tupolev Tu-4
https://en.wikipedia.org/wiki/Tupolev_Tu-4
Socialism can’t create it. They copy it.
The Soviets produced about 50,000 T-34s....we produced around 49,000 Shermans.
The difference being we also produced 300,000+ planes while the Soviets produced ~136,000.
The US produced 6,771 large ships, plus 35,000 landing craft....the Soviets, around 79 ships of all types.
US GDP by 1945 was 1,474 compared to the Soviets at 343.
Simply put....we would have overwhelmed the Soviets in a war.
Capitalism would have spanked Socialism.