Taeth i was agreeing with you logic until you said mayweather picked Oscar apart with a lot of punches.
Mayweather never throws a lot of punches, it's not his style. It's obvious that his style is to throw punches that are straight from the textbook and score cleanly, but never in volume.
Oscar did throw in volume, as much as he could really, and whilst he didn't do enough to win, you cannot truthfully claim that he was dominated.