According to Bjorn, the numbers don't tell the story. He claims the camera is excellent for manual focus.
Well, Bjorn has some credibility, but it is mysterious, so I have to suspect the possibility that his "new toy" enthusiasm is interfering with totally dispassionate evaluation. After all, it has been claimed many times in this forum by numerous very experienced and competent photographers that the combination of lowish 0.7x magnification and no manual focusing aids (split image, micro prism collar) in modern viewfinders has been doom for accurate manual focusing ever since AF arrived, even with film, and the problem should surely be even worse if you print and view large enough to take full advantage of the 16MP sensor resolution. Have all the old experts in this forum been so wrong all along?
One point about manual focus on _any_ optical ground glass/frosted plastic TTL OVF: the scattered secondary image seen in such a VF only has about 2MP equivalent resolution, and is limited to about f/2.8 DOF even when the aperture is wider than that, so it is never going to be accurate enough for precise focusing when working with the shallow DOF of very low f-stops. But that might be irrelevant to what Bjorn (and many other photographers) are doing with manual focus; all could be well once stopped down enough to get a decent amount of the subject in focus.