What are some Hypothetical responses if Floyd loses?

[CFH]

It depends how he loses. Was it a bad decision, a KO, a close fight decision, or a one sided fight decision. So the responses are contingent on the details of the fight and how it ends. But I can't really see any reasonable excuses sounding good if either fighter loses especially if its Mayweather. I think if you're looking for hypothetical excuses it will be if Mayweather easily outpoints Mosley. Even though everybody seems to agree that Mosley is the best chance to beat Mayweather people are already saying things like Mosley has been inactive too long and Mosley will be close to 39. Buy I will throw one out there.

Mosley just has his number.

I disagree, I think Pacquiao is a much bigger threat to Mayweather. Followed by Mosley, Williams, and pre-Pacquiao Cotto (I think that fight took a lot out of him, but that remains to be seen).

Wow, I'm surprised. Pac is much more susceptible to getting outboxed, which is Mayweather's forte, than Mosley would be. But do you really think Pacquiao is a "much bigger threat" or just a bigger threat?

I think Pacquiao is a much bigger threat. I still think Mayweather would beat him, but I think he possesses several attributes which make him more dangerous than Mosley. He's younger, more adaptable, more dynamic, faster (arguably), hits almost as hard, he's a southpaw (I've seen several knowledgeable posters demonstrate that Mayweather's defense is designed for fighting right-handers), he has better movement, and, despite Mosley's great win over Margarito, he's looked like the much more impressive fighter recently. Mosley has been susceptible to being outboxed as well. Cotto, Winky, and Forrest all did it by relying on their jab and those fights showed the difficulty that Mosley had making adjustments (though I think he did a fairly good job in the Cotto fight).

That is why I feel Pacquaio is a bigger threat than Mosley or any of the others I mentioned. I still think Mayweather - Mosley is a great, compelling fight, I just expect Mayweather to win.