Are unanimous decision wins in MMA really valid?

If decisions wouldn't count then what would happen? A 6th overtime round? or the champ keeps his title despite not having won? It's up to both fighters to fight the better fight and/or finish his opponent. It's Rampage's fault that it went to the decision and it's his fault the decision went for Griffin. He doesn't deserve to keep the belt simply because Griffin didn't submit him or knock him out. I'm a Rampage fan and I'm not happy that Griffin won the title. I don't think he'll keep the title for long in that division, but he earned the title and he deserves it. That's all that matters. If you have a problem with that, then just hope next time Rampage can KO Griffin like he did to Chuck.