Followed link and made these crops to show small difference between D800 and D800E:
Full image (from the E down sized to see whole frame easier):
D800E 100% crop just above statue:
D800 100% crop same spot:
Crops made in CaptureNX2, I did not shoot these and did not PP these at all just showing difference is all. Very small... I did try to sharpen D800 to match D800E and took about 10% Intensity with a 5% Radius 0 for Threshold... looked about the same afterwards. But if you do the same to the D800E pic, get even sharper....