When it looks lighter, what you are seeing is partially reflected light giving the appearance of a lighter finish (the first pics in your post are under soft box/studio lighting which gives the finishes a much lighter appearance, not what you will see in normal office or home lighting). I own a gen 360 and it can appear both light and dark, but in most indirect lighting situations it appears darker than typical PVD.
Actually both gen 360 and 195's can appear as dark as the 292 ceramic (once again the lighting is the main determinate). I'm not trying to turn this into a pissing contest, just passing on what I know to be the case in-person.
Same watch direct light and indirect light...
This is why pics are unreliable for matching finishes, especially DLC coatings...
same DLC coated buckle, different light source (no pic, but outdoors it looks black).