Which fight sells the most PPV Buys? Mayweather-Maidana 2, Pacquiao-Marquez 5, Canelo

Which fight sells the most PPV Buys? Mayweather-Maidana 2, Pacquiao-Marquez 5, Canelo-Cotto? These are the three biggest PPV fights that can happen. I think Klitschko-Wilder can also be very big but is further away. I believe Mayweather-Maidana 2 sells the most and does somewhere from 1-1.2 million ppv buys. I think Canelo-Cotto has a possibility of cracking the million buy mark but more favor it to do about 900,000 buys. I think Pacquiao-Marquez 5 does about 850-900,000 buys. Let me know what you think the order of these fights do in terms of PPV Buys.