Excellent article.
I occupied myself intensively with the correlations of resolution, image size, perceived sharpness and - to introduce the Holy-Grail-term that combines all those parameters - glory, both professionally and personally virtually all my life.
There was an ancient german textbook on cinematography, considered The Bible at german filmschools, but I always found it to be unbearably dogmatic (it recommended, for instance, never to use sDoF and always to use 3-point-lighting). But it had a good, an indeed very good chapter on framing, on composing an image, using the french term cadrage.
Good framing, according to the book, always results in an image that has great *pithiness*. This was illustrated by putting grids over great, well-known paintings, thereby retracing the way the artists guided the viewer's attention from there to there, creating either harmony or dynamic (or, for that matter, a tension between harmony and disharmony). Furthermore, there was a debate on how detail contributed to pithiness - or on the contrary, confused it. And there was a crucial distinction between texture detail and motif detail.
Texture detail will always need sufficient resolution (relative to the image's size) to depict the pattern (grass, skin, fabrics), but it has no postive effect on pithiness (but may interfere with it). Motif detail is not so much about resolution, it is, interestingly, about *time*.
Because to take in important motif detail within a film frame, you need time.
Take this painting from Pieter Brueghel the Elder (The Procession to Calvary, 1564):
(EDIT: Resolution is about size. You can't recognize all the interlocking scenes, because the resolution is 800px)
Polish filmmaker Lech Majewski made a feature-lengh film of all the little actions put into this painting (which clearly is meant to be watched for quite a while), The Mill & The Cross:
Every single of the awesome GH4 demos we saw so far either have no pithiness of the image (users are tempted to 'show off' meaningless High-Res and shoot the naked chaos) or they are resolution-independant. One could as well say, higher resolutions don't add any information to the image, they just allow to blow it up more. But then again, as the article says, we saw the latest blockbusters, including Godzilla, in meagre 2k (856 x 2046 pixels), and nobody complained.