Mofatmat, you may have 3 years of ownership but you seem to be confused about how the SMG works. If you are in manual mode it will not downshift to a lower gear when you go full throttle, The only time SMG will downshift (in manual mode) without the driver directing a downshift is when you're going too slow for the gear selected, like approaching a stop light or stop sign and still in to high a gear for that speed.
Put another way: In any gear with an SMG and the RPM above 1500 (maybe less) the SMG will not downshift on its own in manual mode even under full throttle.
Also, I don't expect DSG to be programmed to interface with the driver any differently than SMG, the main difference is it will shift faster.
Chitown - No the SMG does not creep forward like an automatic it acts exactly the same as a manual tranny if you have the clutch depressed. You will only get forward motion by giving it thottle.