Wouldnt the god choose the person with the best odds to be their champion though? I know I would if I was a god.
Once you bring religion in, all bets are off. Tamriel's divine beings can do what the [censored] they want, and it's from difficult to impossible to gauge their motivations. So who knows. Maybe they're making some kind of a point? Besides, with divine backing, if the god absolutely wants, the "hero" can't fail. Which wouldn't be heroic, since there's no effort. And why even bother using a mortal champion, if you can't risk failing.
What about that it could distract a male enemy just long enough as give them the initial edge during combat, most old fasioned men tend to abhor hitting women unlike some of the monsters you get nowadays.
This wouldn't be the case in Tamriel though, since women have taken part in combat for thousands of years, and nobody reasonably expects to have enough time to stop for some birdwatching in the middle of a fight.
Also, to actually swing a sword or an axe at an angle that would allow the shape of this armour to guide it in is pretty difficult and an unnatural motion. You would have to be trained in killing women with briast plate armour, there is a perk for something similar to that I beleive.
Actually, the problem with boobplate isn't that it directs the occasional sword to the middle of the briastplate. You can't penetrate hardened steel with any sword. The real problem is that briasts tend to be soft tissue(well, most of them anyway...), which means that if you hit the boob on a boobplate, most of the energy of the impact is transferred to the unfortunate wearer's sternum, which tends to be less durable than hardened steel in most cases.
Just for the record, sure I like some of the skimpy armours but some of them are just way to skanty for my tastes.
But us red blooded men do enjoy the female form, no point denying our nature.
I'll tell you a lil' sekrit: Women are all nekkid under their clothes. Don't tell anyone!
