I don't know I've never seen Ketchel at welter, he's usually ranked more at middle for this sort of thing.
Jeez, I was thinking about this match-up just the other day. Curry by brutal KO. Short life due to too many tragadies. His brother, former JWW champ committed to hospital, sister died in a motorcycle accident, and I believe his grandmother passed around the sametime. He then loses to Honeyghan.
Margarito doesn't have the style to discourage Curry or the skills/speed to break through his defense or win an in-fight. Curry's fall was in his decision to stay at WW when he was clearly having troubles making the weight. He'd fought very effectively at 154 prior to even facing Honeyghan, he just didn't want to relinquish his WW title, and ended up paying for it. Weight troubles (and out of ring issues) aside, Curry was an impeccable technician at his best. Long range, mid range, close range, it didn't matter, he was as well schooled as any fighter you're likely to see on film. The definition of a textbook boxer/puncher, with very good speed and power, excellent timing, and some of the best accuracy/punch-picking I've ever seen. Ultimately, he lacked the mentality (and probably durability) to ever maintain any kind of greatness, even though he clearly had the ability and showed it for a short while. At his best he was one of my favorite fighters to watch. The Ricardo Lopez fans need to study up on Curry if they want to see an even better example of a textbook boxer/puncher, IMO anyways. As for this matchup: Margarito's wide, telegraphed shots and slow footwork would see him picked apart from every range, to either a wide Decision or late TKO, probably on cuts.