It's pretty clear why they're getting numbers. Guys who approach and entertain themselves by taking the piss or talking about shit they think is funny, or busting on the girl, usually do better than guys who approach and try to make the girl like them by being "cool" or whatever.
LOL! that's awesome, everyone who says: "losers!" try doing that yourselves, takes balls. Some of these girls are clearly massively attracted to them, just goes to show it doesnt matter what you're actually saying, but how you're saying it