When he's retired and people look back, what weight division does everyone feel will be regarded as his prime?
126 even though he only had 3 fights there.
Well the hatton performance was pretty good. He pretty much beat the best guy there, so there was no need for him to stay there and defend his title which he could probably have done until he was in a zimmer frame.
So moved up. He has been dominant at 147 as much as his 140 spell was. But only this time people think there is a guy named Floyd who can beat him. So he can stay there for the time being.