Most Helpful Girl
Standards-wise, I think that men and women are equally picky when it comes to finding an exclusive, long-term relationship partner.
When it comes to finding a strictly temporary, no-strings-attached type arrangement (i. e., either a one-night-stand or a booty call/fling), I think that women are a bit pickier than men. Or, at least, this is where the gender differences in what we're picky in are really highlighted.
When it comes to expressing interest and approaching a stranger--for whatever reason, be it platonic, romantic, or strictly sexual in intent--men are "easier" in the sense that they're more approachable and receptive to flirtation, and in the sense that they are more likely to attempt flirtation with a random stranger. Women, on the other hand, seem to have difficulty handing out a simple compliment, even to a guy that they do know.
I wouldn't say that this makes men "easier", especially if you're out to find a serious partner, but it certainly leaves women with the impression that male interest is something to be taken for granted. If a woman is dying for an ego boost, she has a lot less effort to make to get one from the opposite sex than guys do.18
Most Helpful Guy
I once had a friend recite the expression "You've got to lower your standards if you want to lower your drawers!" I don't think that mentality is uncommon with guys who just want to get laid.1