Thanks for the exposition, Luka. Instructive, especially as it is counter to my own subjective (and modest) judgment of the two lenses in use. No need to tone down your style of description, it's on the pleasant side of provocative
Luka personally I'd be mighty interested on your thoughts on the other ZM lenses in the same vain as this discussion. if you dont feel it belongs here maybe it would warrant it's own thread as there is a lot to learn here.
or, if you dont mind, you could do a little tier list where you could group "superior", "acceptable" and "inferior" lenses together with the understanding that these labels applied only to stopped down infinity performance.