one thing to note here there reason arri and sony F5 etc don't get included in this ranking, is as far as i know they don't have a dedicated stills mode
i shot have stills on a dragon before and they are pretty good and its quite easy to switch to that mode during a shoot
also the i would agree with the DR on the helium it,s very good as good as my K1 as far as i can see
and what makes it even better that's from a moving image
i,m sure you could pull an individual .ari or DNG from one of these other cameras and test ....but thats does,nt seem to be how the DXO guys work.
i,m glad some one brought up the 645z ...it is quite strange that was left out ...that is truly brillant camera