Power delivery is irrelevant Fred, it’s purely dead travel in the throttle pedal that is either present or otherwise.
With a mk7 there is significant lag at low to medium pedal depression no matter what the engine and I’ve owned them all from one of the first mk7 GTI’s, through R, GTD, Ed40 and 7.5 TCR.
The mk8 seems to suffer less.
Even EV owners quite enjoy the added responses of pedalboxes.
It’s that difference between digital lag and cable and carburettor style immediacy.
I prefer the latter, many aren’t bothered by the former.