Talking about sharpness really is pretty counterproductive since the word really has no meaning.
Acutance, resolution, sure.
Intuitively, there IS a distinction,
and THAT is pretty subjective. Unless you, Kenneth, and I know each other,
there isn't much useful information we can share.

(I actually think that the two lenses aren't comparable,
yet they are complimentary !)

Sometime, borrow / rent an old Summicron, give it a spin.

Then, you tell US !

In the meantime, SHOOT those pictures.