I love Breidis but prime Frazier was a truth machine that not many fighters that size could handle. Frazier is always susceptible to large, super heavyweight sluggers like Foreman but Breidis was a very methodical, technical fighter that fought at measured pace. Against Frazier, he would NOT be allowed to dictate the pace. Frazier by UD only because Breidis has one of the best chins I have seen.
Breidis has some success early, but Frazier gradually turns it into a war (Just how he likes it) I think Joe punishes him and gets a stoppage around 9-11 rounds.