Mayweather can easily hurt Pacquiao. He hurt Marquez, and didnt "fail" to finish him off, he didnt want to
Sure he does. Speed and the punch you dont see, will hurt sometimes just as much as power. A knock down is caused usually when one becomes "off balance", whether it be due to your brains being jumbled, or simply to due poor foot positioning and being hit at the same time. Alot times power can do that, alot times a well placed fast punch you didnt see can do the same thing. I think when people imply that Mayweather cant hurt Pac, they are talking a win via KO. I think Pac can surely be "knocked down" during their fight, but doubt he would be "knocked out" by Mayweather simply due to Pacs stamina and tenacity. If Pac gets hit by pot-shots all night, that accumulation might lead to a Hatton type KO. But, I see more of a Marquez type knock down happening to Pac, if any at all. Mayweather isnt a finisher like Pac, in the sense that Mayweather doesnt seek to finish you off right then and there. He will methodically break you down. If he knocks you down, its just a notch in his belt and vote of reassurance that he is in control and will possibly do it again or dominate you the rest of the match. When Pac gets a knock down, he goes for the kill. Different styles for 2 different fighters. One will try and end you soon if possible, the other will be content chopping away at you at their discretion.
He has the power. He doesn't commit much sinch he is afraid of a counter. I don't think he likes to load up at all. If he did he would have power. Most fighters do if they load up.
he's the naturally bigger guy and would outweigh pac by at least 6 pounds come fight night, of course he has the power hurt pac.