It shouldn't be surprising that prosperity advanced much more in the already advanced and industrialised west than in a former semi-feudal peasant economy country. The point is that that former semi-feudal peasant economy rose rapidly to become at least a perceived competitor to the west, even with the most destructive war ever waged on a large part of its most fertile and productive land.
Also, corruption and lying? That isn't specific to the USSR. People are and were miserable in the west too, cultural genocide was and is happening in the west too. Comparing like for like, socialism worked well for the USSR. It was able to heavily industrialise, house populations, create a space program and compete with the USA on the international stage.
Mali. The domain is free.