Well I haven't really been with an older older women, oldest was 23 but I agree. It only took half of my game to spit in order for her to be all over me. I was amazed myself at how successful I was with gaming this one girl. There was even this one situation where I was at a party and one of my friends randomly decides to bring her aunt (who was just an HB6 at 25 I think). I was just talking to her the whole time making strong eye contact and she was just showing IOI's. She would even touch me on my lip saying "You got something there," and she would smile.
I guess in high school, girls are much more cautious and careful, older women are easier but much more selective and get harder to get the hotter they are.