You can tell, but it's not all that marked in my opinion. I don't find myself suddenly saying, "damn, I'm on the wrong ACC setting!"
Mind you, after the 12-year-old Peugeot, even normal seems like a feather bed. And I haven't driven a Golf without it (apart from a short test drive) to compare.
I specced it because I cart my 93-year-old mother around, and she was complaining bitterly about the Peugeot. I put the Golf in Comfort, and she's perfectly happy and then she falls asleep.
Rolfe.