Check out Michael Koncz story here:
Team Pacquiao Fire at Mayweather; Talk Bradley, Cotto - Boxing News
This is far more credible and detailed than what Mayweather is tweeting.
I don't like Bradley to be Pacquiao's next opponent because he leads with his head. But of all Pacquiao's possible opponents (Cotto, Bradley, Peterson and Marquez), Bradley is the best choice (well, maybe not economically). He is a young, strong, undefeated junior welterweight. He is not weak and undersized like you pointed out. He's the same size as Pacquiao for crying out loud, plus he soundly beat Peterson. And he is undefeated, which I assume you would have a high regard just like Mayweather since I can still remember us arguing about the importance of being "undefeated" last year.
Pacquiao already beat Cotto, decisively. No need to watch that again. I don't blame Floyd for choosing Cotto over Alvarez and Guerrero, but he should have chosen Pacquiao. Cotto, at this point of their careers does not stand a chance against Mayweather (I'd be very glad if I'm wrong). Bradley has a better chance winning against Pacquiao, than Cotto winning against Mayweather.
You praising Mayweather fighting Cotto is the same as me praising Pacquiao if and/or when he fights Bradley. Fan ka ni Floyd, kang Manny sad ko.
In your mind Pacquiao ducked Mayweather, in mine, Mayweather ducked Pacquiao. But if one is going to be OBJECTIVE about the whole thing, its plain black and white who has the history of avoiding fighters, and its not Pacquiao.