Agreed.
I think Pacquiao thought that Mayweather would respect him, respect that both were ending their careers and have a slugfest/power fight. Mayweather proved that, as unlikable as he is, he's in it to win it and he fought like he always does. Take your opponent out of his game, be technically sound, be defensively sounded, and counter attack when your opponent makes a poor attack leaving himself open or when he gets frustrated and goes off his game plan.
And Mayweather showed us why boxing has a dying fanbase. If it's not a slugfest, it's a snooze fest.