I'm sure they both have their differences. Perhaps your mind is letting you see what you ONLY WANT TO SEE.
You can only pick one! Your mind wants both, that's why your preferences are being mixed up in both girls, thus confusing you.
Sit down and get your priorities straight. Figure out what characteristics you really want in a partner and organize your standards. When you've got that figured out, then choose which one you would want to be with and who wants to be with you.