You're logic is so screwy. How would Floyd be taking a pay cut when it would be a historic purse for him?
As we've already discussed, the entire reason they fought in Macau was because they knew the Algieri fight wouldn't sell big. Arum even said this himself. Macau pays them crazy amounts of cash so it never mattered to them about low PPV sales.
again, bottom line - only Mayweather vs Pacquiao can shatter records. Only them two, period.