Earlier quoted context omitted.
Common perception is that the US contributed the most to ending WW2 (Not the opinion at the time) Common perception is also that the US won the space race (Not the opinion at the time outside the US). Perhaps "common perception" isn't the right metric to go by.
It depends on whose perception. Common as in 'the world' is something that we don't really have so you are always going to have to go by some locally colored version of events. The US eventually did win the space race, but they lost Rounds 1 and 2 to Russia. The United States getting involved in WW2 when they could no longer ignore it ended up getting the formidable American industrial engine engaged in ways that had…
They did _because they started a new round_. What the US did is equivalent to losing badly and then screaming "Last goal wins" repeatedly until you score the last goal. Yes, US sources claim a US victory. That doesn't mean they actually won.
> The US view is that they did all the heavy lifting,
The Soviet Union was responsible for ~80% of german casualties. The Soviets made a difference in Western Europe by winning in the east. It's what killed the german propaganda machine.