Calzaghe by easy KO.

We know Calzaghe fights well away from Britain - two visits, two KO victories without losing a single round.

We know Hopkins has struggled away from America - two visits, one PTS win and a draw after getting off the floor a couple of times.

So, clearly if the fight was in Britain Calzaghe would have the edge, and likewise in America as he's a proven good traveller.