Played the demo a week or so ago. Was sorta confusing at first but I got it after a while. Needs some polishing with the fighting system, a bit too stiff but a lot more flexible then the other ones. It's a bit cheap though since you can spam the charged moves, get them once then charge up, hit, repeat. I would've preferred playing the game with the D-pad...hopefully they'll let you change up the controls once the game comes out. Personally I never really liked the sequence of buttons in order to do specials but whatever.
As a fighting game alone(in the demo at least) I'd say it's more of a rent after playing the demo, like all the other Naruto fighting games.