I think in terms of being objectified, men won't ever be able to compete with women. But there are certain genres in poser art like war or fight images where substituting a woman for a man would not have the same effect. Sometimes when I see a scene with lady cops or female soldiers and no men, it has more of sexual context than the grit that would be there if it were co-ed or all male. Not to sound sexist, but there is certain imagery that without a male present it doesn't have the same effect. Conversely, there are some imagery where substituting a man for a woman doesn't give the same effect either.