For build the morphs it is necessary that the object has many points and so much polygons.
The hip of Victoria satisfies these characteristics, Victoria hip is full of polygons in the genital zone, Zygote modelers have not neglected this detail. 
Unfortunately, the Stephanie hip has really few polygons, chiefly in the genital zone. Sig! :-(
For these reasons, The Stephanie morphs have not detailed like those that I have built for Victoria.
In each case, If you join a beautiful texture to these morphs, the final result is satisfactory. Stephanie has a body of woman finally.