There's no way a Floyd fan could defend this. At this rate, it's better that Floyd fight Bradley, Marquez, or Pacquiao.
I mean, if you have to look at it in this way:
Marquez, defeated Pacquiao, defeated Bradley, defeated Alexander.
There isn't much logic to this fight if Mayweather isn't going to fight one of the three top challenges at 147. Even then, he still has Guerrero to choose from.