Not one you would want to bet too much on. I give a slight edge to the Beast in his- Parker, Green, Fletcher, Hargrove, hagler-brief prime.
Jackson blasts him early. Julian was simply a better fighter, and would beat Mugabi to the punch by virtue of having the MUCH better skills and technique. Jackson KO 3.
Mugabi did blow a few fights he should of won. Jackson only got blown away by top level opposition and age. Jackson early, maybe real early.
Jackson only lost in his prime to an all time great in McCallum. Against G-man, he was past his prime, half blind, and Gerald was really a Super middle while Julian was a natural junior middle. I'd love it if Jackson were in his prime right now. Canelo, and Trout would be headed to the morgue.
McCallum was good, indeed very good/excellent; but personally not 'great'. I guess it depends what standards you require for 'great' to be thrown around... Thus he was beaten by age!
Jackson was the better more accomplished fighter, threw tighter punches and IMO hit harder too. Jackson within 3.
The chin that took everything from Hagler for 11 rounds? Jackson's chin is just as easy to exploit, if not more so. Not that I'd bet money either way, but I quite liked Mugabi as a pure puncher. 50/50 if you ask me. Someone's going out.
To the people saying Jackson is better in every way, would he be able to last 11 hard rounds with Hagler? I'm no so sure.