How does this one pan out? I'm leaning towards Jackson KO, Martinez would be tricky but Jackson would catch him at some point as Martinez is by no means a defensive wizard and could get sloppy.
Prime matchups, Jackson would stop Martinez. Martinez was a good but overrated fighter, with plenty of defensive weaknesses. His chin was good, but Jackson was an absolutely freakish puncher with solid skills and would get to Sergio. Jackson's chin was alright. It gets a bad rap at times, it wasn't especially good but it wasn't as terrible as people make it out to be.
Margarito and Jackson fight nothing alike, and Martinez was still pretty green, but the end result would be the same. Martinez gets stopped.
Julian could handle Sergio's speed, Sergio always gets clipped. You don't wanna get clipped by Jackson.