Only worth it if you're a die-hard Spidey fan
Of all of the levels, the stand out best was Ultimate Deadpool - very funny, full of nods to the Ultimate comics, and broke the fourth wall several times, which was pretty entertaining.
Cut scenes were only meh worthy, and I'm not a huge fan of the cel-shading (though some people are, so whatever).
Finally, the entire voice cast was phenomenal - every Spider-Man has previously voiced on a different Spider-Man TV series (check Wikipedia here: http://en.wikipedia.org/wiki/Spiderman:_Shattered_Dimensions#Audio ), and all of the villians were great. Plus, Stan the Man Lee is narrating, always a plus.
Overall, this is only for the die hard Spider-Man fans who are willing to put up with several hours of button-mashing. Has it's fun moments, but overall, this isn't worth buying, only renting.