The decline of Hatton's chin - Myth or Fact?

[Fenster]

Could that not be down to the fact that he's no longer facing gatekeepers and journeyman?

His speed? How would his opponent affect his speed? I think it's quite obvious he was much faster when younger.

Because he is bound to look much faster against a journeyman than he is against Pacquaio, as Hatton will be faster than the journeyman but slower than Pacquiao. It's easy to look fast against a 40 year old gatekeeper.

Yes that's true. But just watch some old fights, he clearly looks faster/sharper punching.

It's the norm for people to slow and weaken with age, so it is only natural that Hatton's punch resistance is not as solid, even if it was overrated in the past.