In the 1950s, McCarthyite propagandists were spinning tall-tales and mythmaking about the world's most effective system at rapidly improving living conditions and scientific development. 70ish years later, with the soviet archives (somewhat) opened up, we have much better evidence at just how awful the lies of the US Empire were, which was busy exporting genocide and terrorism worldwide in order to plunder and dominate the world.
There's no confusion here, the US Empire was the evil side in the Cold War, and evil won out. From genocide against Koreans, Vietnamese, Cambodians, coups in Chile against democratically elected presidents in favor of dictators like Pinochet, brutal trade embargoes against countries like Cuba that dared to implement a more human-focused system, the US Empire was and still remains the most brutal and evil empire in history. Thankfully, imperialism is crumbling and this evil country is nearing its end. Hopefully after it falls, a socialist country can take its place.