Good game, but far too stripped down compared to previous games, and nothing for newcomers to the Dragonball universe.
Graphics - Excellent. Easily the best looking DBZ game to date, from great looking fighters to nice looking backgrounds. The in-game drama scenes look fantastic.
Sound - In some of the DBZ games, it really sounds like the English voice actors are just going through the motions so they can get the pay check, but they seem to have found a new inspiration for the characters. The music is really great high energy rock common to the series, but the songs are little bit better this time, and really stand out. One of them sounds suspicsiously like a Bullet For My Valentine song, though.
Gameplay - The fighting system is more like the Budokai series, which was a great place to return. It feels a lot faster than the Tenkaichi series, and the move feel very powerful (something I felt was missing from Tenkaichi 3). I think the biggest improvement in gameplay is that though the arenas aren't huge, they did a good job of making them seem so. They don't do the wall-grid which made the Tenkaichi arenas feel smaller than they really were, and manage to constantly turn you around and throw you up in the air so you don't feel the invisible walls quite as much.
The biggest problems: Small roster of fighters (though my favourites are all there, going from 150 fighters down to the 20 odd here is disappointing), and the story mode is VERY limited. Though the matches are fun to play through, there's only a handful of battles and there's a few levels when they force you to play as Broly, and I can't stand playing as Broly. That irritated me. Also, only Very Easy, Easy and Normal are unlocked at first, and playing through on Normal is a cake walk. Once you start playing on Hard and Very Hard, you'll see a challenge, so it's disappointing that you have to play through all the levels on Normal to get to the real game.
Some characters are unbalanced (like Broly. There's just no reason to play as him. He's not fast and not particularly powerful, so why even bother with him?), but for the most part it's o.k. Tien is really fun to play with, and I've found that he's been mostly overlooked in the past.
Few game modes, as well. I've never done the online thing, so I don't know how that works, but one would think they would at least include a World Tournament or Cell Tournament mode. It's DBZ for Pete's sake.
Good, not great. I'd like to say good start for the current generation consoles, but that's not really an excuse in this day and age.
If they include more story and more characters in a future sequel, I'd buy it.