LOL, no it won't be. If John Cena wins the Royal Rumble, then Rock has to defend the WWE Championship at Elimination Chamber. Rock is not soiling his hands on a meaningless, throwaway PPV. Ryback is winning the Rumble, going for the SmackDown title and John Cena is winning an Elimination Chamber for the #1 contendership for the WWE title to face Rock at Mania.
The Rock is scheduled for Elimination Chamber PPV in February.