just been out for a drive and i cant say i noticed this on mine!
Its there on all VAG 1.4, 16 valvers.
Stick your car in first, be at a standstill and try to pull off quickly.....it aint happening. You have to give the louder pedal some beans before raising the clutch to pull off sharply and even then there is still like a slight delay or hesistant response.
Having driven 1.2 polo's I can confirm that they do not suffer from this issue at all and therefore when in a standing start race my mate gets off the line alot quicker unless I have a perfect launch.
But to have a perfect launch you have to be prepare for it and in a real life scenario this isnt really possible.
Now for a solution.
Take your car to revo and get them to do their free trial remap. The 1.4's hesitation could possibly be something that could get mapped out. Try it and report back