I don't know.
I think it looks great. But I also think people are hyping it WAY too much. It gets stuck in the "Every Sony game is AAA" mantra.
Still, I'll most likely get it, but I don't have many PS3 friends to play with.
Of all those "every ps3 game is AAA" games this is the most deserving and the most unique title. For me it's the first, actually.
It's not that it looks great, it's also very charming and cute and tons of customization and depth to the editting and sharing. Plus it's like 4 or 8p co-op and after playing N+ I got even more excited about sidescrolling platform co-op.