I don't think so bro. Manny just did less than 300k. Floyd did 750k fighting Maidana with a grade F undercard. Face it, FLoyd sells. Pac was selling because people thought he was invincible and could defeat FLoyd. They finally saw that he was not and all the casuals left
I still contend that even Mayweather keeps his casual fans/haters hanging around especially because the Pacquiao fight hasn't gone down. Once its over, mainstream interest in both guys will dip. It's Floyd, Manny then a big dropoff when considering star power, worldwide recognition, ppvs, resume, speed, power, etc. If even Manny cannot make this fight close, Floyd can definitely go out on top. Just give him the TBDefenseE crown, no need to watch Floyd fight anymore, lol. The crazy thing is I don't even think Floyd haters mind giving him his props. Just beat Pacquiao, then there's nothing left to debate. Its not like only Manny got old in all that time, they both did. After Pac vs Mayweather goes down, Mayweather can REALLY talk his shyt: PPVs, TBE, most paid boxer of all time, etc. But that's also why I say none of that is going to matter after Pacquiao. If Mayweather doesn't retire, the only selling point he'll have left for future fights is young vs old.