I think Pac will win a UD by being the more active fighter
Not sure if being more active grants you the decision. Look at ODLH, he chased Floyd through the fight, threw flurries, etc. And nothing. Out of the flurries he would connect a punch or two which wouldn't hurt Floyd. Floyd would later pop Oscar with a straight right and so on. A true chess match having both guys completely clean and not hurt at all after the last bell.