So hitting cannot be the main factor regarding arm lock success.
That sentence still doesn't make any sense. who's supposed to be hitting who? Is anyone hitting anyone? What do you mean?
Ronda rousey finished her fight in the first round. At top level competition.
You've missed my point...again. I said a promoter doesn't want all the fights finishing in the first round, that one fight on the card finished in the first round is neither here nor there. It also doesn't mean that the promoter was pleased it finished in the first round, I doubt they were. It changes all the timing right though the card, either you bring the next fight forward risking the fighters saying they aren't ready yet or you have an interval where you didn't plan one and risk a crowd becoming restless. The fans of a particular fighter ie Rousey might be pleased she finished it in the first round but promoters find it annoying.