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@JustinLaBar How is there more money in rematches at Mania vs punk/taker, rock/Brock, etc? Not excited for rd 2 mania, yet. #br
Well, let's remember that you're basing this question off of rumors as the official matches haven't been made yet.
The answer is: because of who the names are.
This is about advertisement and notoriety in big-money markets to casual fans. Everything comes down to getting the casual fan. The hardcore fans have made up their minds if they will watch or attend way before the card gets announced.
The Rock versus John Cena is a rumored match many expect to see at WrestleMania. They are the two biggest names WWE has to offer. WrestleMania is in the top market of New York City. That match will gain far more attention than any other match pairing.
In addition to media appeal, repeat matches also can mean more money because it's about what status the talents are at now. It doesn't matter if CM Punk fought The Undertaker in main events of pay-per-views in the fall of 2009. What matters is that now in spring of 2013, the status of both men and the billing of it being at WrestleMania is at an all-time high in terms of significance.
CM Punk's stock has gone way up since then and The Undertaker's legendary status grows with every WrestleMania. As a hardcore fan, I don't want to see a bunch of match pairings we have seen before.
But, I understand why we could.