Only way they are nearly the same would be in power level. They're both heroes yes but Superman is the hero that all other heroes look up to. No way Marvel is Superman's equal in that regard. Only Captain America is worthy enough to be compared to Superman as greatest superhero of all-time.
__________________ Darwin's theory of evolution is the great white elephant of contemporary thought. It is large, completely useless, and the object of superstitious awe.-Dr. David Berlinski, Philosophy
Most people believe Evolution not because they themselves are dumb, but cause they trust the "experts" who are feeding them evolutionary fast food, and so they don't bother questioning whether or not it's true.