Ive used his Overpower to one shot kill several toons. If he gets a Crit and has his buff on he can annihilate Dooku and QGJ. Did it to JC as well, but he may have been 5-6*. So low health toons beware. Didn't keep track of the numbers because I was so surprised when it happened.
I'll pay more attention from now on, but this guy hits pretty darn hard. With the QGJ big I don't like using him when he's in the group.
Now defense is another story.