Liberals tend to be collectivists, whereas Conservatives tend to be individualists.
That’s most likely true but that is not a measure of intelligence.
Let me put it this way. While I disagree with Karl Marx because I think he ignores certain facets of human nature in his proposals of how economic systems should be organized, it’s also obvious that he displayed a certain level of genius and intelligence in his deconstruction of capitalism whether you agree with him or not.