He can take a hit though I I'd actually like to go 1 on 1 with him outside of the octagon and it's rules. He is rather slow and his foot work is sloppy, he also used his size to shove the guy which can easily be countered making his size a weakness. Punching to the face doesn't work on a lot of experienced fighters do to them being used to it and its bony even if it hurts them they won't show it not to mention his opponent looked pathetic and hesitant which made him a easy target.
Out side of the octagon rules I would be able to use focused attacks to pressure points with my finger tips and I wouldn't have to worry about getting cornered so his grappling would be ineffective. After extensive Iron palm training over many years I am able to break wooden boards with my finger tips, using this technique on an actual person can exploit pressure points far beyond the norm making even the most muscular body seem feeble.
The thing that makes MMA fighters rein supreme in their fights is the caged octagon and the rules created for their protection. Some of the most effective moves in ancient styles of Martial arts such and Kung Fu and Muai Boran can be extremly dangerous and deadly to your opponent against the rules but on the streets or basically outside the cage an MMA fighters biggest advantage is gone, they can no longer corner or trap their opponent and now avoiding their attacks becomes a lot easier since they are already lacking speed trading it for brute strength.
I understand that I am probably sounding rather arrogant, but I also understand my own capabilities and I have seen numerous clips of Kimbo's fights and he is not hard to figure out in terms of his fighting style. Nobody is immune from all pressure and weak point attacks and those types of attacks and the understanding of the human body and the locations of these points has been an important part of my training from day one.