I have a D200 on hand to try for a few months before I finally bought the S5 Pro.
The Fuji S5 Pro is a very specialized camera. It will appeal strongly to a certain group of photographers, and this group consists of mainly portraiture artists (yes, I use the word 'artists' to describe portrait photographers).
To shoot portraiture, you don't need a razor sharp lens or camera. In fact, portraiture artists will normally soften their subjects by adding a softening filter or using specific softening techniques or plug-ins in Adobe Photoshop.
With the introduction of the S Pro series from Fuji, portraiture artists already saved tons of valuable hours tweaking and perfecting the colors, softening, burning and dodging in Adobe Photoshop.
Bottomline is that Fuji built the S5 Pro 'softer' than the D200 with a purpose. If you want a razor sharp camera, I suggest you go for the D200 with Carl Zeiss ZF lenses. These lenses are so sharp that you will be able to see every pores on Zhang Ziyi's already very smooth complexion.