Speed kills. Pacquiao brutal knockout between rounds 5 and 9 in a classic battle. Hatton will go down fighting.
:blood Do you know what hard to find means? When he was fighting Marquez they he was not pressuring him trying to meet him, he was counter punching him. Hattons leg speed going foward will be more than enough to get close to Pac, hell even Mayweather who is a going back defensive specialist and couldnt avoid Hatton. No Hatton will be on Pacs ass like a cheap suit and Pac will fight. Can Pac fight well going backwards? I have not seen it. Ricky Hatton is a very very good fighter who is being writen off completly. Pac winning would not be surprising, but it will not be brutal or early. I think Ricky has it about him and the style to basically push Pac about and make him ineffective.
I think Hatton presents something Pacquiao hasn't seen before. If you look at his four biggest name opponents (DLH, MAB, JMM and EM) - Hatton is nothing like any of them. Probably most similar to Barrera if you had to pick, but would hold a large physical advantage, which he will intend on using. One thing that will be tested is Pac's ability to fight on the retreat, unless he can really back Hatton up, which is unlikely. Tszyu couldn't do it, Pac won't either.
Hatton by split decision. I think he could cut off the ring v Manny and hurt him to the body on the inside. However Hatton has to stick with Floyd Snr and move his head better or he will get nailed with the left hand to often.
Although Hatton looked improved in his last fight with Malignaggi, I think he's "made for Pac" in terms of style. My pick is Pacquiao by Decision, most likely a comfortable one.