Even without that knockdown, Manny still going to win. He almost dominated all rounds except in the later part where is he's tagged by right straight of Thurman. This still a good fight with both fighters not backing down and keep on pounding their gloves on each others face.
That I have to disagree with you and the judges scorecards says it otherwise. Aside from the judge scoring it in favor of Thurman the ones who scored for Manny only has him leading by two or three points which is just 3 rounds where if not for that knockdown like I said may go the other way around. Aside from a very close fight Thurman himself outbox Pacquiao in terms of punches landed where we usually see Pacman land two or three times more against his opponent, Thurman really showed he can fight toe-to-toe against a offensive specialist.