Hatton was shaky in the 12th. Collazo won that round fair and square, and if he had secured a knockdown, he may well have won the contest, based on the fact the 1st round was marked 10-8 due to the knockdown by Hatton.
I've really studies some past fights over the last few days, and I'm sure the best fight for Hatton is Arturo Gatti. He is still strong, a big crowd puller, and beatable by Hatton. It's another stepping stone. No point jumping into Mayweather, Castillo or De La Hoya quite yet. And I'd rather him come back down to Light Welter and reign there.