Until I can see the entire mesh for myself, I couldn't really say. The toes are individually posable, so they probably uppped the mesh density there slightly. The wireframe promo pic of hi-res Jessi at Curious Labs suggests a comparable density around the face region, but unlike Victoria the rest of Jessi's head looks fairly dense also. I wouldn't be surprised if they upped the polycount for the breasts, given a certain popularity with magnets and morph targets for that region. It's only about 50% more, though ... perhaps the over-all increase is simply well-distributed throughout the entire mesh.