I saw a few of his bare fist fights aswell as some other of his more rccent stuff.
He seemed to be well conditioned and had an abundance of physical strength.
He would have been succesful on physicality alone, but for a big man he had/has great technique; his palm strikes in the bare fisted vids seemed even more damaging than his conventional striking...He was an unusual one and his trademark submission was devasting on the back