Well I've read this whole thread and to me the similarities outweigh the differences. The main difference seems to be in the scaling of the models, such as in the hips and legs. However, the underlying morph structure looks very similar; the dimple above the navel and the line running up to the ribcage, the crease near the top of the thigh, and the "fattening" of the thigh near the knee are present in both models, just to differing degrees. Sure the breasts are different on Yayoi, but that just looks like a cleavage morph to me. These facts coupled with the very short development time make Summfox's claims hard to swallow. Just my 2p.