en.wikipedia.org/…/Human_rights_in_the_Soviet_Uni…When it comes to the oil reliance: One of the greatest strengths of Soviet economy was its vast supplies of oil and gas; world oil prices quadrupled in the 1973–1974 and rose again in 1979–1981, making the energy sector the chief driver of the Soviet economy, and was used to cover multiple weaknesses
en.wikipedia.org/wiki/Economy_of_the_Soviet_Union…Considering China is also a totalitarian state that suppresses individual rights and only communist on paper I would argue its not a great example. When it comes to bad allocation of resources you just need to look at the chinese housing bubble
Also, as I said the US is not a good country for a western Social market economy with a good welfare state.