Rock and Punk will be much more entertaining than Cena was. Better on the mic, better in the ring. Unfortunately it's only lasting a few weeks, before Rock wins the title and re-starts his feud with Cena.
Be prepared to have Cena shoved down your throats like never before. It's no coincidence that the first Raw of 2013 started with him, and it's no coincidence that it featured most of the worst aspects of his character, from his "humor" to the hulk hogan style superman win over Ziggler. He's most likely going to get his win back at mania, and he's most likely going to be the complete focus of everything in the company this year in an even worse way than before. Not that it wasn't already bad, when Punk had the title for a year but all the main events featured Cena, but it looks like we're going back to SuperCena and catering to 5 year olds.