The main problem of every camera is light sensitivity. Many cameras suffer from lack of quality because of that. How do you solve that problem: more pixels? No, Richard Marks has come up with other idea. Instead of using more pixels he used sensors with more area per pixel and that what made the camera so good.
The camera works at minimum 60 fps and has a great tracking resolution. It will not miss any of your movements.
Besides, the microphone in PS3 Camera is much better then in previous ones. It is a for-array microphone that has a better sound quality and room coverage. So you can easily take shots, make video clips of your home tests etc. with the new PlayStation 3 camera.
The rest of it does not differ much from the PS2 camera.