Having worked in both, I actually do not think the developer community is better (or less awful) than the advertising / media / sales community. The former is simply more nuanced and subtle. The sexism in the Ad / Media / Sales world is simply more obvious, unhidden and honest. Both are horrible and grotesque - but to be frank, I think that while there is less respect for women in the Ad / Media / Sales world, there is more women-hating in the Developer community.