Your comparision test can be considered void as you did not use the same shutter speed on the D2H as your D700.
Therefore the photo from your D2H looked about 1.5 stop underexposed.
You should not have used any pic control mode on your D700 to run a comparision test.
I believe some beg to differ.
The ambient light sensor on top of D2 series cameras can also affect the WB of your photos.
Was it taken indoor?
I do agree your D2H pic have a green tint but that could due to the flourescent lighting if i'm not wrong.
Another suggestion is to set the tone and sharpness setting to Normal and use Manual Exposure.
Try getting hold of Kodak's or Wratten's Colour Chart and include it with your subject for all comparision test shots.
As to the "error" after the 1st shutter trip and a blank exposure, i was told that it was caused by poor electronic parts not charging up properly and/or firmwares and not some BS about shutter going to give up. It a minor issue to me and no problem after subsequent shutter releases.
Otherwise, my D2H has no other issue except maybe it need a new set of rubber covers which has expanded slightly.
You can check whether your is covered under their service advisory, see here
http://www.nikon.com.sg/pagearticle.php?pageid=67
Also you can google up "Nikon D2H first shutter error".
This is what i found
http://www.sportsshooter.com/message_display.html?tid=20093