If you ignore the fact that they posses two X chromosomes, you'd realize that anyone in the game who doesn't have money or power, regardless of their sex, is a poor peasant who gets crapped on by pretty much everyone. This has been a common thread throughout human history. The powerful prey on the powerless. This game adheres to the lore of The Witcher books and has not strayed terribly far throughout the series. Yes, it is based during times when there was blatant and overt sexism toward woman, but equally so toward men. Men were expected to go to battle and die for causes that were not their own simply because penis; men were expendable and are still largely viewed this way in contemporary times.
As a man playing this game, does it bother me that most enemy NPC's are faceless men without back stories or personalities being sent to slaughter by my blade because penis? Should it? No. Methinks the Internet would have a huge problem with endless waves of women being put in my way though. Why? Maybe because we value female lives more than a man's? Just a thought. Now everyone just needs to calm the hell down with the SJW crap for the love of all that is sacred and holy.
Equally? It's not really equal, when the predominant way of life open for woman was marrying, bearing children and taking care of household.
Peasants or lower class men might not have as much choice on the matter, as, say, nobility, but they were still considered to be head of their household whose decision mattered of that over woman, in pretty much every regard. They could also choose career paths - they could be merchants, squires, artisans, priests, or scholars. They could educate themselves or make money - and for a very long time women simply had NO opportunity like that whatsoever.
Also... really, your're going to say that female life was "more valued", when women were no less victims of war than men were (that's not mentioning rampant rape that happened, usually on women that couldn't defend themselves, because they were left no means or knowledge how to do it).
In fact, they might have not died on the battlefield, but died frequently when giving yet another childbirth, out of complications or simple exhaustion (like my grand-grand-grandma, who - during 13 years of her marriage and was pregnant with yet another child almost at all times... until eventually her body just gave up).