Rock is there to bring an audience to that company. There's no bigger audience you can draw to it than Rock/Cena.

Rock is only there for a limited time, so why waste him with guys that are just going to be overshadowed? Rock is so head and shoulders above anyone in that company that if you try to match them up with him they'll look like amateurs.

WWE barely has time to set up feuds with Cena and Punk. Why would Rock waste his time having feuds with guys he knows the fans will never care about in a feud? Rock with Ziggler or Rock with Bryan or Ryback would do nothing but expose those guys. You're talking about one of the top 5 personalities in wrestling over the last 25 years; they can't hang in that kind of spotlight, especially in the positions that they are in now. Rock/Cena makes the most sense. It's the biggest moneymaker in the company over the last 3 years. It makes no sense to put Rock with someone else and leave money sitting on the table with Cena

The issue with the undercard guys isn't Rock; the issue is that WWE has been shitty with building guys up to be stars over the past 10 years. They sorta succeeded with Ryback, but losing to Punk over and over again has hurt his momentum (getting laid out Monday night didn't help either). Ziggler has jobbed over and over again. He beats Cena on PPV and nobody still cares. You're going to then place him in a feud with Rock? Ok.
_________________________
http://expertise.blogdrive.com
http://twitter.com/KMBReferee
http://www.formspring.me/KMBReferee