GDC 2008: Naruto: Ninja Destiny Doing Better
You got to move on up.
Destructoid's Dale North got a chance to try out what I'm assuming is a retail copy of the game, and, apparently, it's been noticeably improved over the somewhat lukewarm original. Frame rate consistency and controller response times are reportedly much improved from the import, and the roster's now sitting at a more comfortable 16 characters.
It's games like this that remind you that there are some perks to getting games a couple months after our friends in the east. It means time for fixing bugs, adding extras, and in this case, making it look more like the TV show and less like Crysis on a pentium III.