Just want to say....
So this game how should i put it '' awesome'' because you will never get tired of playing it, i have completed 100 pr. of the game,and i dont play in a while but time comes and i want more of that game,also you can play with your friends again and again, there are many characters over 100. Now about the characters yes there is a big choice of them, all the transformations are here,although there are some characters that are missing transformations, for example Broly hasn't got the bio broly form. Now the graphics,its better then BT1 but theres no big changes to the animation because its DBZ's style and you cant change it,but the arena has some changes for ex. when you launch an ultimate blast the arena blows up and becomes a wasteland.
The game starts from Raditz also known as the saiyan saga,and finishes to Shenron or the black star balls saga. But there are secrets to unlock new stories and characters.
Well thats about it,see ya later maybe in BT3 but only maybe..... :)