I think that because the number of pro male athletes is so much greater than the number of pro female athletes that it's more noticeable when a female athlete does a somewhat provocative ad. Moreover, members of this forum are particularly attuned to female athletes, particularly skiing, to the point where if a male basketball player did a provocative cover or ad, few of us would even know about it. But, we all know when "one of our own" is getting publicity.
I'm sure there are dozens of deodorant, soap, razor, aftershave, etc. ads featuring pro MLB, NFL, NBA players either in the shower or locker room wearing only a towel. And sure, they're not using pouty lips, but you can't deny that part of the reason they are in the shower or locker room is to somehow attract women watching sports with boyfriends or husbands.
ETA: interesting results when you google
male athletes and provocative ads