I scored the fight 115-112 for Collazo last night and I re-watched it this morning and still came up with the same scoring... if anything, re-watching the 12th round again, you could have scored that a 10-8 round for Collazo.
Sure Hatton was the aggressor, but watch the fight closely... he landed very little meaningful shots from around the 4th round onwards. Most of the punches he threw either missed or hit the gloves/arms of Collazo. If you are still going to be scoring rounds for fighters who are having their punches blocked, then you are not following the rules. Collazo was hitting Hatton with nice combos and generally being all round more effective, although I could see how some people might score certain rounds for Hatton on first viewing.