I don't know a thing about geometry/vertices--I just know that Vicky 2 is incredibly versatile. With a couple of dial twists, you can morph her through a pretty much infinite variety of "looks:" her ethnicity, age, and build are all easily adaptable. There's lots of after-market stuff available for her, both free and otherwise, with more coming online all the time. She's easy to work with and looks great--even in some fairly, um, extreme poses. I don't own Dina and don't intend to buy her--she just doesn't have Vicky's appeal, IMO: weird body, weird face.