I think that the problem guys have isn't so much that they're getting bumped off the card, but rather that someone is being prevented from collecting a Mania MAIN EVENT pay check. I don't know the ins and outs but I'd imagine the main event at a Mania get much higher paydays than anyone else on the card.
That said, I'd rather pay to see Rock main event it than anyone else, Jericho vs Punk (which we're getting) aside.
I kind of alluded to this in my post, but I don't think anyone will receive a lesser payday for 'Mania. From reading stories about WrestleMania paydays, I've come to the understanding that there's no exact formula for it. There are factors involved such as your spot on the card, the gate revenue and the ppv money - but when all is said and done, a wrestler's payday is pretty much whatever Vince McMahon says it is.
All that said, I do think this 'Mania will make more money than any other WrestleMania in the past. Consider this, WrestleMania 26 reported 885,000 buys. That number was the lowest total since WrestleMania 19 and represented the third-straight year that the current 'Mania reported a lower buy-rate than the previous year's 'Mania.
Last year, with The Rock serving as the guest host, the number skyrocketed to 1,042,000 buys. That represented the second-highest total in WrestleMania history. Needless to say, The Rock actually wrestling should bring in an even higher buy-rate, perhaps eclipsing WrestleMania 23's record of 1,250,000 buys.
With more buys, the company should have more money to dish out to its stars on the card. Because of that, I don't think this issue has to do with money ... I just think it has to do with guys being properly pushed and promoted leading up to the event. For example, Jericho/Punk, the two guys competing for the WWE Title. In a normal year, that match could headline the pay-per view. This year, it will receive third billing behind Rock/Cena and 'Taker/HHH. Since the WWE started teasing the match prior to the Rumble, I think we can all agree that it has had a very lackluster build. Meanwhile, the other two matches - namely Rock/Cena - have received ridiculous builds.
With the WWE pushing two part-time wrestlers (Trips, 'Taker) and a movie star (Rock) harder than their current WWE Champion, how can the WWE expect their full-time roster to be successful once those three go on extended hiatuses following WrestleMania? That's the issue.