I'd say it's a huge portion of her success, yeah. She's arguably the first major female character to have that "I don't give an f" attitude and "I'll do what I want." She embraces her sexuality which a lot of women desire but constantly get hound upon by society. She also came from a messed up background (being manipulated by the joker) to making something from herself which I'm presuming some women can relate to. We don't realize how linear a lot of ladies personalities are in super heroine comics. There's no where near the amount of variety as there are in men. While my favorite personality type is the nice guy/girl boy scout type character, when that's your entire selection you're bound to deal with saturation lol.