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This lens isn't (or shouldn't be) defined by its sharpness. It's most certainly not as sharp wide open as the Zeiss or Leica. What should define the CV is its APO exceptional performance for its MSRP price. We should remember that this lens was $600-$700 when first introduced, a fraction of the cost of the Zeiss or Leica. Of course that doesn't matter much now, and I'm surprised at prices these days.
In my experience, this lens is as sharp as you'd ever want starting at about f/4.5, less (but still) sharp wide open at closer distances, and less sharp wide open at longer distances. Further, I don't think Almass's crop is representative of the CV (maybe the wind blew).
One thing you'll notice with the CV125 is how tonally muted the images are straight out of camera. The files can take, and need, a steep contrast curve in post. This might be another reason that the contrast-y Zeiss and Leica lenses look comparatively good in Almass's comparison.
5D, CV125, f/2.5, 100% crop is unprocessed
5D, CV125, f/3.5, 100% crops are unprocessed