It has smoother framerate? Supposed from the fact that the xbox demo has some slowdown or by compairson? I didn't know this
The PlayStation 3 release is the "Main" version, so most likely and so far it is running better on that platform. However, there are always room for patches and stuff.
My only issue with Banjo-Kazooie and the avatars are that I was worried most people would play as them, and of course the Sonic characters, but apparently the characters are selected on a first come first serve basis, so no doubles. Woo!