Mat would get knocked out by Bisbing. The one thing we learned from the progam is that his jaw is made of glass and it doesn't recoup well at all. I'm not sure of the time period because of the way it was aired, but it seemed like his bell was rung for a week!
The difference is that Rashad can at least box a little. He doesn't have killer hands though. NO KO's.
I like Forrest and is the Best to come out, but Bisbing has the best potiential. He's stronger than Forrest and seems to think better tactically, as he's stopped all of his oppenents one way or the other.