I don't understand why the hell some people are saying that Benson doesn't deserve a rematch. He was the defending champion beating people right and left. Just because he lost to PEttis (marginally in WEC) doesn't mean he shouldn't get a rematch for the title.
Unless there is a superfight between PEttis and Aldo, the next fight for PEttis should be Benson. Without a doubt.
Your logic is flawed, Pettis just beat Bendo for the second time, this time first round submission. Clear cut victory, why the hell would he get an instant rematch when there are several others more deserving waiting in line? Ridiculous.