Okay, so I beat it a few days ago with 120 stars and was very disappointed. Only 3 or 4 missions in this game managed to be at least the slightest bit of a challenge, the rest of the game was so easy it's not even fun anymore! You aren't satisfied after beating a mission that's about as easy as going for a walk, it lacks a sense of accomplishment.
The best mission I think was they Toy Box' purple coins one. It was hard, a lot of fun and I was filled with joy both while attempting it and after beating it. Too bad most other levels aren't even 1/2 as tough or fun. No thanks, I'll stay with my beloved Super Mario Sunshine. Fail, Nintendo. Fail.
Also the camera sucks. Controls are good though.