There no similarities in my mind. Hearns was KO one punch type of guy, but from what I've seen of Pavlik against legit competition he is not. He's a solid puncher, but I don't think he hits anywhere near to as hard as Roy Jones Jr., Tommy Hearns, McClellan, Benn, Jackson, etc. Tommy had way more speed, way better boxing skills, but Pavlik is a better inside fighter which isn't saying, and probably has as good if not better a chin than Hearns.