Robert's got a solid beard and he doesn't have to worry about the straight right (which he seems to enjoy eating) against Tree
I want to see it. Good matchup. If Ortiz can get mentally right I'd favored him. Big if, though, but he is far more talented (Not more skilled necessarily) and the naturally bigger guy.
I have no doubt that Ortiz can hang on for the whole 12 and lose that decision, but I fully expect him to look for a way out once the writing's on the wall.
Things you'll see before mentally stable ortiz: Unbeatable Focused Young Zab Judah Chupacabra boxing knowledge in the boxing forum
Good fight. If it does happen I'd pick Guerrero to win. Guerrero would be too strong for him mentally and would take over in the second half of the fight.