Short answer, no. It wouldn't be fair to either manufacturer to say that because both manufacturers (Jinsan and Zelex) each have their own unique proprietary material formulas, methods, and goals. So while having some obvious similarities, there will inevitably be differences in each manufacturer's material as well. Only time and customer feedback will reveal them all.
After ten years of experience in this industry, we are thrilled to witness manufacturers finally making significant progress in research and development, and enhancing the quality and design of the dolls they produce. We say Bravo, and keep it up! We are certainly enjoying the new developments and are excited to see what's coming next!
Stacey