Um. Well, honestly speaking in my opinion--it's not. Don't bother getting it unless you just have to play Naruto while you're on the road going somewhere or just bored with everything else.
I don't recommend getting it unless you're a die-hard fan of the series and just want something to do with it. Otherwise, you'll just be wasting money.
I do own it, so don't think I'm just bashing it. If you need something like the game though, just get the PS2 version: 'Ultimate Ninja 2'.*
I wouldve really liked it if you could swap teammates at any time. The whole three man team just felt shallow without any sort of aid system or character in battle swap out.