It would only be if he faced The Rock. No way in hell WWE headlines their biggest PPV that features The Rock and Brock Lesnar in a media capital like NYC with CM Punk and John Cena. I'd love to see Punk take on The Rock though.
This is why announcing The Rock's championship match at Royal Rumble so far ahead of time was dumb. At the very least, they should've gotten to January and had a "Royal Rumble qualifying match" with a heel like Del Rio or Miz getting demolished by their surprise opponent, The Rock. Having him go on to win the Rumble makes a lot more sense than getting a championship at the Rumble. Then, he isn't necessarily required every week in the build up to Elimination Chamber, and they could've built some suspense with Punk, Cena, and maybe even someone like Lesnar in the same Elimination Chamber match to go on and face The Rock at Wrestlemania.