There is none. Full burst has slightly better graphics and better story mode animations. Other than that there is no difference unless you don't have dlc
All I know is that Full Burst added an extra segment to the Storyline called "Brothers United", where Edo Itachi and EMS Sasuke fight DSM Kabuto. Trust me, even this fight looks better than in the anime with the quick time events lol
full burst have the fight with kabuto at the end the normal 1 dont also full burst you can unlock kabuto with his sage tecs i think i also dont have full burst but my friend have it but lost interest in it he not a anime fan
There's also a challenge mode added in the vs. mode. You gotta do challenges such as "evade getting hit for 20 seconds against Deidara" and "unable to use A (or X for ps3). I had fun with it.