CEDP certainly has more options for controlling tonal response curve, white point color temp, black point and shadow detail transitioning. The biggest differences you see are improved gradations due to CEDP's iterative calibration process and less pink in the skin tones (which is something that GMB processes cause). While these differences may be lost on the average consumer, they are nice for demanding professionals. Tryout the free demo and switch between profiles to see this for yourself.