both are fast but I keep bringing up punch distance, when a guy throws a punch that travels 8 inches, that is going to make it faster than the same guy throwing a punch a distance of a foot and a half. It's a consideration to take in. Roy threw long looping punches a lot of the time , pacquiao, Tyson, both generally threw very short punches when we go 'wow, that shit was fast", it's a combination of speed, coordination, and throwing short punches, you watch many or Tyson on the bag, both do that rhythmic drumroll type thing on it but they also do not extend those punches or even bring them all the way back to full guard. Manny in particular, throws his punches like a wing chun gung fu type of guy, really short, which was great, i'm not knocking him, he was still freakishly fast and had the most stamina doing that of any human being I ever saw, I still can't say he's faster than Camacho who threw his punches with classic form and was still a blur.