Check this thread:
Virus TI ReMOTE Templates v0.7 - Now with sysex
There are "more knobs" on the Virus Desktop, because there's the Shift button which will double the available knobs... But you also have 24 sliders which you can use just as a knob.
There's also usage for the buttons, because there are also buttons on the TI Desktop (for example to change LFO mode from normal to envelope)