It looks like the original 3 Budokai games with better graphics. Tenkaichi 2 and 3 pretty much captured the full feel of a DBZ fight. Typical side-view fighters doesn't do DBZ enough justice.
I was hoping for a 3D version of DBZ: Legends where 1 to 3 characters fight another 1 to 3 opponents, but they were all fighting on the same screen at the same time. You can change between characters you play and who you fight against on the fly with a press of the button.
With how far Tenkaichi has come along, I was expecting that sort of thing to happen if it went nex-gen, but it seems that BT3 was the last in the series and, from what it looks like, this is going to be a step backward in gameplay.