New 5D mkIII Shooting Information Display

I notice that if I choose to view the histogram for both brightness and RGB color, the image shown is very small compare to the 5Dmkii.

It's has a larger screen but I noticed that they never maximise the screen usage. If you notice that the each of the info display i.e shooting mode, WB, aperture, shutter speed has a large gap.

I wonder why they didn't place like the 5dmkII and hence with a larger screen the image shown would be larger.

How do you guys think?

I think it doesn't matter. If I want to view the image, I will not be using the histogram and will view it as a single item. I'll take the added histogram display any day since I can just cycle through views.