The guy is an immensely gifted fighter who just has an amazing flow to his movement and, coupled with the brutality of his striking, makes him a very concerning prospect. He does need to knuckle down and concentrate on his take-down defence and ground-game though, this could easily be his shortcoming against a quicker and more agile BJJ specialist.
That said though, what a finish that was. It was clear that he inflicted some severe damage from how Cyborg was writhing on the floor after being dropped, you don't see that very often. You certainly don't often see post-fight pics of a fighter sporting a crater.