Who would win, Superman or The Hulk?

I know the answer to this question! 

My 6 grandsons discuss matters of this kind ALL the time and I'm often called to adjudicate when things get a bit stormy!

Superman would win every time!

The clue is in the name - SUPER man.  Not an ordinary man like Hulk who is simply a man changed temporarily by a chemical experiment.

No contest...

Now who would win between Superman and Wolverine?