^ There is really something wrong with Jerwin in that fight against Martinez. It's not that he change his style and decided to be a brawler, I'm not saying that it's an excuse, but perhaps the weight as they have confirmed already is the biggest factor for their lost. Now, they have the rematch at hand, they know what they did wrong in the first fight. So it's either Jerwin win convincingly so that it won't cast any doubt, or if he losses again, there should be no excuses. And the next fight should be in the higher weight for Jerwin.
You are right, if he losses again, there's no reason for him to stay if he will still have the same excuse but it's nice if he will not just make an excuse and just accept his defeat. We know boxers love to make an excuse but losing twice, I think it's pretty much convincing that Martinez is just the better fighter that deserves to be a champ.