In all honesty, who knows. Slice is no doubt a circus freak but at the same time a bareknuckle street fight is a hell of a lot different than boxing. Not to say a really good HW wouldn't tune him up, but Toney hasn't been close to that for 5+ years now and his style wouldn't do him any favours outside the ring. David Haye you have to figure could easily knock Kimbo flat out, and probably would. Still a chance he would be gunshy bareknuckle in a parking lot though. If you let anything at all besides clean punching slide anything could happen. Toney especially strikes me as a guy who would probably just get bullrushed to the ground a lot of the time in a real fight, these days at least.