Of course that is only considering wide-open and stopped down resolution as far as MTF is concerned, if we put a weighting on distortion, CA and falloff the results would be interesting, but I think it would tip things further in the ZM\'s favour (aside from falloff obviously).
Perhaps wait until you have a calibrated rangefinder before making assertions about sharpness (or of course you could consult the Zeiss datasheets for each lens).
(or of course you could consult the Zeiss datasheets for each lens).