Nope, beat them both. The difference is, after beating Chad, we see his face all messed up. But after beating Caleb, MC goes into depression because he landed a perfect hit to knock Caleb out cold, and yet it did nothing. Maybe he ain't a professional, but Caleb for sure trained in martial arts as well. When you combine that with his physical advantage, yeah, Tremolo, whose skills were described as not good enough by the black dude, guarantees that he is getting fucked up by Caleb in their next fight.