How do you guys think he would do against the top 140 fighters? I believe Khan and Ortiz would beat him they are just too big, strong and fast for Marquez. I believe he beats Devon Alexander. I think JMM would school Maidana and as long as he does not get caught he either TKOs Maidana or gets the decision. Jmm vs Bradley would be a a great fight but I believe Bradley outworks JMM in a close fight. Speak on it...
I think he beats them all basically except for Khan, who's too big and fast for Marquez at this stage althought he could certainly KTFO the guy.
I think he holds his own against all of them but guys like Bradley could pose problems. Although Bradley has shown chin problems and his defense is not the greatest. Khan is definately the worst matchup.
He would eat Alexander alive after being peppered from the outside for about 3 rounds. Bradley would be a good fight, he'd likely decision him or get a late stoppage. Ortiz would be difficult, but he wouldn't quit against the onslaught and cut up Ortiz bad. Judah might knock him down with a flash upper and then wilt under the counters to lose. Maidana would be the ultimate test of his toughness at this age, and while I think he might be tough enough to weather the storm, I wouldn't really want to find out for his sake. Khan, like everyone else said, would be the worst stylistic matchup. If JMM could maintain his speed at 140, his timing could give him a shot, but it would be the most difficult.