That's just crazy. I think betting on Bonnar to make it to the score cards could be a decent bet to make. But I wouldn't bank on Bonnar winning a single round. Bonnar will be Bonnar. One of the best punching bags ever to step into a cage.
The fact this fight is happening is so retarded in the first place there really is no bad bet to make. A slip with Bonnar by decision would probably bank more money as a collector's item in a couple of years than the bet itself would bank if it happens.