Pacquiao knew all along JMM was capable of knocking him out...
hence why he fought with such apprehension, against Marquez, compared to how he usually did.
In the last two fights, he rarely went for a knock out. Especially in the third fight, you can sense the mutual respect from both fighters.
Marquez had the power all along to finish Pacquiao and he showed it this past saturday.
Now deal with it.