We all know Mundie is by far a much better boxer now than the guy that fought Kessler.
So in that respect, we cant really look into how Kessler handled Mundine unless we decide to stick a set of blinkers on.

Other than that, i have to say its a real toss up. Calzaghe could outwork Kessler and show the extra class...

Calzaghe would need to make Kessler walk on to him to show him all his lateral skills and "fluster-clusters".

But those loooong, hard and fast left and rights look mighty dangerous. They might just keep Calzaghe out the fight for long enough to win.