I guess I just have to put in a dissenting opinion.

The submissive cedes power and control to the dominant, (and the dominant takes it,) because it is mutually beneficial to do so.

Just because the sub can take it back, in no way changes the fact that for that period of time, the dominant is the wielder of the power.

My control is not an illusion. If you insist that it is, then the submission that goes with it is even more illusory. In which case, there is no gift at all because it has no value.