This explains things further and hopefully provides the understanding as to what is different from standard 0-10V control and PWM
http://www.netrino.com/Embedded-Syst...dth-Modulation
GHL goes way further also being the only controller to control DALI (Digitally addressed Lighting Interface)
So although other companies may have 0-10V options that does not mean they have unlocked all its modern potentials, there are other far more modern methods.