Regarding sharpness asked Sam Moore about it on vimeo:
One question, what was the sharpness setting in camera?
Sam Morgan Moore
"sorry did not check the sharpness - so 'as it comes' I guess
image I set to neutral"
And like i said on vimeo, that's actually interesting, if it was on default setting it would be interessing to see if the digital sharpening has been improved and if using it to a greater extent makes the sharpness on the MkIII comparable to that on the MkII.