I think if you listened to the pundits, then this is about what you expected. Mayweather boxes defensively. His intent isn't to knock his opponent around at this point, especially with someone with the rapid-fire attacking prowess of Pacquiao.
Money wasn't going to play around with Pacquiao and look for a pretty knockout unless Manny left himself wide open too many times. He was looking to go the full match in just doing what Money does: Predict, defend against direct hits, evade, move, bob, weave, and counter when a small chance presents itself.
Pacquiao looked good, but he knew all along that he could catch a knockout blow if he was too aggressive and left himself wide open. So he couldn't afford to be as aggressive as he might normally be. But he needed to be aggressive in order to win. Ultimately, him being cautious (albeit with reason) was playing into Mayweathers's game. And you can't beat Mayweather, a bred, born, raised, and trained boxer with superb boxing talent at his game. You have to get lucky and catch him a few times with some powerful blows, and Pacquiao didn't get close to landing enough to take Money off of his game.
Still, I enjoyed the match despite the lack of excitement. Both looked as good as I expected. A friend invited me out to watch the fight. I found it entertaining as a geeky sports fan.