The real difference, prime for prime, is that Jones had real power. He was KOing very good quality LHW's where as Calzaghe only stops average fighters and wins decisions against his toughest challenges. That doesn't mean Joe isn't a great fighter, but it would have cost him in a fight with prime Jones. Even though I think Joe matches with his handspeed and is a more adaptable fighter, the extra power and better counterpunching of Jones would have carried him.

Now, I gotta give the edge to Calzaghe, but 8 years ago, no way.