I take exception with the term perceived sharpness when used with lenses. Lens resolution is an easily measureable and quantifiable property. There is nothing perceived about it. Now the sharpness of a particular print is subjective and the use of "perceived" is proper in this case.
I think I see where you are coming from, but as resolution is just one part of what constitutes sharpness, and the other parts include various types of contrast, I think the performance of the lens is relevant to the issue of perceived sharpness.
“Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”
Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2