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Note that I thought this comment chain was at max reply depth, this comment was a reply to scotty79 not the parent.
Your link provides a nice graph [1] showing that USSR and many countries that were capitalist had similar GDP per capita in 1913, but diverged wildly over the following years. I suspect academic has such a graph including more countries along with some rating of how the underlying economic system worked. It would be interesting to see that. I am aware of a decent amount of economic literature that does credit capitalism as a major force for pulling billions out of poverty.
Your page seems to back up my point, does it not?
https://en.wikipedia.org/wiki/File:Soviet_Union_USSR_GDP_per...
I believe that the graph does in fact support your conclusions.
For example, there's plenty of communist countries that had industrialism but failed to grow economically as much as capitalist peers as examples. I'm unaware of many (any?) examples counter to this.