Porter will probably look to come out fast and try to physically bully Malignaggi into a more defensive mode and keep him on the back foot, because while Malignaggi is a good defensive fighter, his offense suffers greatly if he has to constantly think defense first, and Paulie doesn't possess any kind of punching power to be able to keep guys at distance.
Porter has the larger skill set physically, but I can't shake the feeling that Malignaggi is going to get into Porter's head early, frustrate the younger man, and box his way to a second world title at 147 pounds. Zab Judah still had physical advantages over Malignaggi, too, but he couldn't beat him mentally, and thus couldn't beat him.
Malignaggi by UD
GL Mo.