The best female armor I've seen in a video game involving large numbers of women in armor was in Dark Souls. This may have something to do with women in the game not being sexualized in the slightest, in favor of a persistent mood of oppressive dread. Even the suit of armor (the Lord's Blade set) specifically designed for women bears more similarity to an actual suit of armor than to Brunhilde's brassiere. The chestpiece is breastless, designed to deflect blows off to the sides, not present a nice point-catching surface at which to aim a sword or mace. Beautiful.