As obvious as this may seems...these are actually interesting fights to me Any combination of these fighters... Thoughts please...
Marquez and Broner both beat and KO Berto. I think Marquez might struggle against the power Mosley brings as well has his excellent chin, that said I think it is clear he would rightfully be the favorite. Broner UDs Mosley.
Mosley can't pull the trigger. Stick, move and collect a wide UD. Berto vs. Marquez is a pretty good fight. Broner won't be able to walk him down, though. He'd have to adopt a different game plan. I'd take Broner just based on size and experience.
Why wouldn't Broner be able to walk Berto down? That is the perfect strategy, because Berto doesn't know how to keep distance and can't fight on the inside at all.
I've been saying since before Pacquiao fought Mosley that Mosley would be easy pickings for a legit master boxer like Marquez. Its parrallel to Hopkins facing powerful but much lesser skilled fighters like Kelly Pavlik. Mosley in his prime relied on the physical skills like quickness, speed and power. Those skills have long been diminished and his boxing is really subpar. Mosley would be boxistically lost against a real skill fighter like Marquez. If they fought today, Marquez would become the first fighter to stop Mosley. Mosley may still give a little bit better than average fighter some problems, but he is through at the elite level and Marquez would massacre him boxistically and punish him with hooks, straights and uppercuts that would have team Mosley throwing in the towel. To much know how from Marquez, Mosley is to far gone to even make it competitive.
Its not if he went to the body. Mosley would attempt, but Marquez would'nt give him that angle he needed to land. Margarito would hurt Pacquiao badly if he went to the body, and we now know that the one or two times Margarito landed there, he hurt Pacquiao. Only problem is Paquiao was too good for Margarito for Margarito to land there on a consistent basis. The same thing would hold true for Mosley vs Marquez, only its an easier fight for Marquez vs Mosley as Margarito at least is mentally much tougher than Mosley and does'nt shutdown when the going gets tough.
Broner would school Berto something vicious. as you can see, Berto was trying to imitate Broner against Guerrero, yes Broner, not floyd, but Broner marquez schools him too. Mosley is a mystery to me. his power is very real.
Marquez and Broner both destroy Berto IMO. Juan probably knocks him out, Broner I'm not so sure, although he does hit very hard for his size. Late stoppage possibly, Berto's D isn't good enough nor is he quick enough to stop either man getting to him.