he already obliterated a unified Middleweight title holder who Cotto is now fighting at a 'catch weight'. He has been begging to fight Cotto for which he the is Mandatory and Cotto will not fight him. What else can he do?
Got to pick all three of them to beat him but GGG is a live underdog against them all. We just don't really know how he'd perform at that elite level yet.
Big GGG fan here but he certainly hasn't done enough yet to pick him against any of these 3. There's only one fighter from 160-168 he could beat to prove he could hang with these guys and that would be SOG.