Hatton would win IMO. I think Marquez has no business fighting above 135. Plus, he's not getting any younger.
Hatton is would be huge compared to Marquez, I know people said that about Pac, but Pac is much bigger than Marquez is.
If hatton has got something left he should win on points after some shaky moments. Marquez is just dead at the weight. He was losing to juan diaz at 135 so hatton at 140 or above might be too much. Definitely think marquez is capable of knocking him out though, if lazcano and pac is anything to go by.