I can see this ending up as a close win for Whitaker. Whitaker would land the cleaner sharper punches but Pacquiao would land alot due to a high output and he would be the agressor forcing Whitaker to dip and dodge even more than he's used to. If the judges like to score effective agression more than defense which is sometimes the case, Pac can win a close one. Whitaker's jab would give Pac hell for sure I think ultimately that's the main difference maker.
If marquez could win at least 6 rounds against pac, what do you think a boxer like Pernell would doatsch