I haven't checked out the PS2 version's CAP yet but the 360/PS3 version's CAP has been beefed up a bit. You've got the usual functions as far as assigning player ratings, bio data and accessories but you can also assign players signature jumpshot forms, Go To Moves and the like.
Just had a look at the PS2 version and can report that there is nothing new in that version. Only the Xbox 360/Playstation 3 version's CAP has been updated.