Are all political systems equal, meaning they bring out the goods that we all

Are all political systems equal, meaning they bring out the goods that we all want in our society, when ideally practiced, or some would necessarily come out better than others just by the fact of their nature, arrangement and constitution? For instance, I once held the belief that communism is an equally good way of a government as democracy if it is ideally practiced, but I now doubt this point of view. Do I have good reasons to doubt it?

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