Upload & Sell: Off
The optics are more or less the same as I understand it. The Rollei has 3 aperture blades...
After some research (interesting thread ), seems that Rollei started in the '70s to make lenses under Zeiss license in Germany, then in Singapore as well. Besides the obvious aperture difference, Rollei used their own coating formula. For proof, coating reflections are quite different (reddish for Rollei). I have no idea which one is better. Another trivia: HFT stands for High Fidelity Transfer.
Now looking to get one before you guys make the price of this beauty go insane ...