Manny's power at this weight has been surprising to me (therein lies the drugs argument), so I disagree with the thought that its just speed and angles. Hatton's chin was on the wane but that was an ungodly KO. He hurt Cotto badly, capital letters BADLY, with single punches. Only reason Cotto survived as much as he did was he got on his bike big time. ODLH and Clottey have always been very durable guys so its not surprising he didn't KO them with one shot or many shots but he got their attention without a doubt.