Reaction speed in fights
One good thing you can do in a fight is to take advantage of those little moments of confusion that happen. For example: a man goes in for a takedown on another guy. But once they landed on the ground there was that split second of confusion while the guy who took him down thought about his next move. But the guy who got taken down bounced up immediately like a spring and jumped ontop of the guy that took him down and started throwing punches down onto his face.
This wasnt really something that took skill this was just reaction speed. Ive noticed this wins alot of fights. Its in a moment of a scramble. A guy like Anderson Silva use to always win fights in some sort of chaotic scramble while the other guy stalled for a split second. Jim Miller just retired Donald Cerrone in the same way even tho hes lesser of a fighter. Younger men usually have much quicker reaction speeds as well this probably contributes to fighting being such a young man sport.