MIguel Cotto has been the A-side of the fight since it was signed, and if there was any doubt, he made sure that the fight was contractually obligated to make him look like the A-side at all costs. Of course, while this has bugged Sergio Martinez, the reality is that Cotto truly is the A-side, title belt or not, and the purses for the fight reflect that reality.
Cotto will make a purse of $3 million for the fight, but is guaranteed at least $7 million. Martinez, meanwhile, has a purse of $1.5 million, with potential for a good bit more depending on how the pay-per-view does, as he has an upside bonus added on.
The undercard is very cheap by major boxing event standards, with nobody making six figures:
Wilfredo Vazquez Jr $65,000
Marvin Sonsona $30,000
Jorge Melendez $85,000
Javier Maciel $10,000
Andy Lee $70,000
John Jackson $60,000
To most, it seems, there's another reality reflected there, and it's that the undercard promoters (not Top Rank) didn't much care what kind of show they put together, as it was all about paying the main event guys.