Calzaghe by comfortable UD, though he could potentially take a count at some point if he decided to test his luck inside for too long.
It was said once about Tiger.."a good trombone player could beat him", meaning that the path to success against him was to jab and move, jab and move, etc.,....It's conceivable that Calzaghe could have used his speed in employing that style and avoided all temptation to slug with him, ala Joey Archer, Joey Giardello and Emile Griffith, and that's what it would take, plus no showboating along the way.
Calzaghe going to be coming in with fast flurries and trying to change his angles, to maximise his hand speed and foot speed advantages. Tiger though, no one is going to beat him in a war. I think Calzaghe is abit too hittable, as he came inside with his flurries, Tiger will be able to trade with him and land some damaging shots. I think this quality over the quantity would give him an advantage. Calzaghe is tough and battle worn, although Tiger is a strong puncher and I do think he will hurt Calzaghe badly and take him out.