I am not sure what you think those images demonstrate, Bernard. They look very "ordinary". (With, of course, the usual caveat about the limitations imposed by viewing any image on a computer monitor via the internet.)
What I would like to hear is whether you can detect any discernible difference in quality, between the old lens and the new, in reasonably sized prints (say A3)?
I find the new lens to have better uniformity across the field on the wide end while remaining excellent on the long end. The bokeh isn't Otus class, but is good for a zoom lens.
The VR works well and AF seems very fast, accurate and reliable on the D810.
Cheers,
Bernard