Yes, that´s how it has been at least until V6 and according to the C6 manual it is still that way. But I´m sure JMCecil will tell us how it works…
Well, it makes smaller value increments than normal in relation to the same mouse movement. You can simply try it. ( But only works in the slider area of the EQ window (- or generally with any fader), not in the EQ graph - at least until JMCecil tells us how).