I can agree with you on that perspective that Hopkins has a harder punch than Calzaghe,after all Hopkins looks very comfortable at being 175lbs and has been for a while.Dont get me wrong i like Calzaghe,im a good fan of his but he just seems to be lacking in the punch-power department.I meen when was the last time he floored a boxer onto the canvas?It's been sometime i can tell you.Nevertheless a K.O by a punch does'nt always happen in the great sport of boxing"Though it does help a great amount!"but you can win a fight in lots of different methods that im sure you all know about e.g,By out working your opponant to the JAB,Throwing and landing more cleaner punches to impress the judges,Picking your shots from head to body to break down your opponant.These methods alone are a great effective way to win a fight if conducted separately but even greater if there are utilized together which is were my personal view of the Calzaghe Vs Hopkins comes into the it.If Calzaghe still has'nt gained any more punch power after moving up a extra 7lbs then i feel he'll still out work Hopkins to the JAB as well throwing faster combinations from head to body to dominate and win the fight on points.Cant wait to watch it,it should be great.I just hope that Referee Cortez lets the fight progress by not getting in the way of things as i feel he did in the Mayor Mayweather Vs Hatton fight back in december.