I don't see how it's really a "parody" or "tribute" either. Sure it resembles certain other superheroes, but that's like saying X-Men was a "parody" and "tribute" to the Doom Patrol or that Punisher is worse than The Executioner. The Incredibles are their own thing.
Which begs an interesting question though: could the Incredibles become part of the MU?
When the Ff film was released, I read an article in a sci-fi magazine about the production, and Avi Arad said that when The Incredibles was released, Marvel came very close to suing Pixar. It is extremely close in concept to the FF, a family of four superheroes, and only one superpower is different.
Anyway, I do like the Incredibles, but when it comes to superhero films, I prefer watching the live action 'serious' ones. I spent my whole life reading comics, and watching animated versions of superheroes, wishing they would make great live action films that took the material seriously. Part of me is still amazed that these films exist, because I waited on them for so long. So, it's rare that I'll put my dvd of the Incredibles on, when i feel like watching a superhero flick.
I do still watch a lot of superhero cartoons though, but there is the trade off that you get lots of cartoons, like comics, whereas with live action films, you only have a few hours of top quality material out there.
as for the parody aspect of the Incredibles, it hovers on a fine line i think. There are random things like the 'Mole Man' popping up, that don't make much sense apart from as a parody/tribute, but mainly it sticks to a logical story, so it leans more to the actual superhero tale I think, albeit, very derivative of Watchmen and the FF, enough of a similarity to say that they are a tribute to the established superhero tales we all know.