Actually, if both fighters often have KOs on their previous matches, it is unlikely that this fight would end up in a KO unless one is way greater and stronger than the other. 67% and 63% KO rate are pretty much close and would just be a balanced fight that might also end up having the same strength -- hence lesser chance of knock outs. But yeah, Magsayo really had been judged by so many of how he didn't had any knockouts recently but that doesn't mean he can't right now. Vargas, on the other hand, is the one to adjust on the weight requirement in this fight, hence more challenge for him other than the fact that he will be challenged by a reigning champion on that weight category. I still won't talk too much on whom is better than the other, their trainings still must be considered for a win bet.