In both of these sports, men wear comparable tight, form fitting leotard or body suits. In both sports, wearing these outfits is actually somewhat appropriate to performance of the sport, which is probably why both genders wear them.

Sports that are more widely marketed - unlike gymnastics and ice skating which are basically Olympic only TV events - are much more likely to involve skimpy or different clothing for women. Beach volleyball (which weirdly, is not just an Olympic only TV event), tennis etc. And the marketing which surrounds female athletes in other sports ... car racing, cycling have been used as examples thus far.