Maybe you misunderstood. A girl that is a 10 only when she washes her face and takes care of herself is not something you can control. She may see and treat herself as a 6 and there may be nothing you can do about it despite seeing her potential. It makes sense to simply focus on 10s because it shows they at least probably take care of themselves already. Vanity is more in the attitude department and would obviously be a deduction.
I'll use a Christmas tree to make my point in regards to beautiful women.
Theres 2 types of Christmas trees, a plastic one and a natural one.
Both when decked up will look awesome, the artificial tree ALWAYS has the best decorative expensive items on display to mesmerise you and to cover up that its actually artificial. A dead tree.
Same can be said abt the natural tree, once its decorated, in terms of mesmerising a man with its beauty.
It's when all those decorations are lifted, when it's all laid bare that I find the natural tree still beautiful, even if it's plain, especially when compared to that plastic tree which is all about being artificial.
A forest of natural Christmas trees is something to behold even without the added trinkets, at least for me.