Yeah but you're taking the high water mark where Floyd had another ATG and mainstream star to fight, and NOBODY broke 3 or even came close except Mayweather, Pac and now Conor. Mike Tyson has never broken 2 million PPV buys.
Floyd vs Berto = 400k
Floyd vs Maidana = 900k and 925k
Floyd vs Ortiz = 1.2 million
Conor vs Alvarez = 1.3 million
Conor vs Diaz = 1.5 million and 1.65 million
Conor vs Aldo = 1,025,000
Conor vs Mendes = 825,000 (and that's with a short notice replacement)
So Conor has a ton of drawing power and that should never be in question. They sold over 2 million more PPV's than Floyd did with Pacquiao, so that's proof positive how big of a draw Conor is.