http://dcdv.zol.com.cn/404/4049905.html
(in Chinese)
Test pictures were made with the same FE35/2.8 Zeiss lens and then pictures from both cameras were resized to 4,000 pixels in width and then cropped.
It seems the A7R really shines here, for both image details and noise, i.e., both are better than the A7!
In addition, it is highlighted that the A7R has some special new features including special designed micro lens per pixel to tackle diffraction and 4k video output for still image display. Well, on paper, it is shown to be quite attractive, also.