There really was a lot more difference in most of the women's faces as compared to the men so it isn't just that you are more sensitive to women's faces. If you subtract the 2 images in GIMP you can more easily see what changed. Naomi Weinstein and Martina Eckstut had large changes to the size and location of their eyes. Alison Bruce who I found very pretty was basically unchanged. James Franco was also untouched and the only real change to Woody Allen was the frames on his glasses. Micheal Cera's eyes moved and although his pictures were smaller I thought the change was quite noticeable. The programmer Tommer Leyvand probably had the biggest change for the men. His eyes were moved to be on a more horizontal line and his face got noticeably thinner.