if the fight happens in usa it's mayweather all night long, but if by chance it ever gets done in britain i give hatton a good chance.
reason i say that is, hatton is never going to win a boxing match with pbf. NEVER. if he tries that, well, see gatti v pbf for similar result.
hatton absolutely needs to get very dirty (low blows, headbutt, elbows, hitting on the break, etc, etc, etc) and he happens to be very good at just that. fighting is as much a psychological game as it is physical and pbf is an egomaniac. to upest the egomaniac and destroy him you've got to take him out of his comfort zone, because if pbf gets any room whatsoever he's going to look very good dancing a jig on ricky's head.
ricky's got to go after him, cut off the ring and do what he has to do (see above). if he doesn't he loses, that simple.