I think we have moved onto the eternal discussion about R/R32/GTI.

Returning to the DSG v Manual
speed discussion. There are 2 reasons the DSG is quicker.
1. The actual shift time is less as the gear is already running so the clutch can come in and out quicker allowing for more drive to the wheels.
2. The DSG does not lift off the throttle and as a result the turbo keeps spooling. This takes away turbo lag. If you want to test this try and change gear on a manual and a DSG with a dump valve. On the manual you will hear the turbo release. On the DSG it is silent until you lift off the accelerator.
Manual may be more fun but from standstill to 60 the DSG is quicker.
I would also say that on higher speeds the DSG also works better as at 100mph+ the wind resistance of the vehicle decreases the speed so any lapse in acceleration through a gear change is magnified. The Dsg has no lapse in acceleration compared to a manual