Here's a pretty good article I found....
BraggingRightsCorner.com - JOE CALZAGHE - ROY JONES JR.: WHO WILL WIN?... by Jim Amato
Who will win? To me a prime Roy Jones would have taken the measure of the best Joe Calzaghe. Today it may be a different story. What I feel will be Roy's downfall is his tendency to spend way too much time languishing on the ropes. This would be tactical suicide against Calzaghe. The problem is Roy may not be able to do anything about it. He can no longer move around the ring as he did in the days of old. I've noticed Calzaghe has two speeds. When he lets his hands go in flashing flurries, he keeps his opponent on the defensive. The trouble is he generates little power on those punches.
In fact he has less power than Aunt Jemima flipping flapjacks. When Joe does try to set down on his punches, his hand speed diminishes quite noticeably. His power increases but not to a great extent. He is surely no Bob Foster. Jones is no Jake LaMotta when it comes to whiskers but I feel he can take Calzaghe's best.
In the end I look for Calzaghe to just outwork Roy. He does need to be wary of Roy's counter left hook off the ropes. Jones can give Joe a lot of problems with that punch. I think Joe wins a decision with a few points to spare. Maybe a late round stoppage. I just hope as a fan it is a better fight to watch than the Calzaghe - Hopkins slap and grab contest.
I don't agree with Cal stopping RJ...if anyone were going to stop anyone it would be Roy putting the stop sign on Cal. But I did agree with most of what he said.