Superbad was incredibly overhyped and got by on making jokes that no one else would make. It appealed hugely to the teen/early 20's crowd, but once again, no intelligent humour there whatsoever. I mean it isnt bad, and if your drunk watching it then yeah its good for some laughs, but it certainly wasnt the bust your balls laughing comedy it was made out to be. Superbad was an American Pie clone that just upped the swearing.
And there are SO many comedies out there better then either of them.