That's actually one of the things I found appealing. Women are treated pretty poorly in Witcher games in my opinion. Even during their gameplay vid today when he rescued the woman I thought to myself "so after I defeat the Griffin I can come back and collect her sex card". Nothing realistic about it. In Bioware games some of the women are gorgeous, some are cute, and some are frankly ugly. And all of them aren't sexually available to you. I think that's a good thing and helps immerse me in the world.
The Witcher doesn't exactly depict an ideal fantasy setting, so yes, there is no gender equality. There are plenty of strong female characters, most of them the influential sorceresses, and some are capable warriors.
I didn't play much of TW1, but the majority of women in TW2 are not sexually available. In fact, the romances in the second game were handled better than in the DA games imo.