I have been thinking about this a lot recently and remember how at the end of Iron Man Fury tells Stark that he is not the only Superhero? Who was he referring too? Banner had not become the Hulk yet, Thor was still in Asgard, and I don't think Hawkeye and Black Widow considered themselves Superheroes. There was still Captain America, but he was still frozen so it would make sense to count him at the time. Could by Superhero Fury have simply meant exceptional people to be recruited into the Avengers Initiative? Am I missing something or am I just looking too much into it?