Hatton-Mayweather - 50/50 fight in my book.
PBF needs to rely on more than just stopping Hatton on cuts to win the fight. To state he would win by cuts - FACT is just naive or a purposeful wind-up. I think it is the only way he could stop Hatton, but not the only way he can win. His best chance is a points win as he is naturally smaller and less powerful than Hatton, but undoubtedly more skillful/quicker than Hatton.
Hatton on the other hand, does IMO have the power/workrate to stop PBF, the big question is can he catch him cleanly often enough, if at all. I could see a Hatton win by KO. I also believe Hatton has the aggression and workrate to win by decision. What weight they fight at could be an important factor 
Great to have a variety of opinions on the forum though, so welcome aboard mate