I think the Rock just had an off night. It happens. Could've been a sore voice, or just him not feeling it. He's the best mic man in the biz, so I give him the benefit of the doubt.
Cena did well though, but the whole thing about the Rock not caring if the WWE closed it's doors is silly. He would probably have the same reaction that Cena would. They both would care, but wouldn't do a damn thing to help out the guys that lost their job. It's funny how he acts like he's some man of the locker room when he hasn't been using his status to push guys at all. Sure he put over Punk and Ryder, but he only jumped on the Ryder bandwagon to deter all the boos, and Punk got so hot that it wasn't like it was a Cena idea to put him over.