I don't get massive traction problems at all.
As I posted some weeks ago,I've also recently had occasion to 'take on' blokes driving an S3 and an S4,both of whom were definitely trying.
Quattro didn't seen to offer them any advantage at all.
I dare say it would be handy in snow but,for 99% of the driving I do,2wd is ,apparently,fine.
So the USP of quattro floats over my head.
Putting it another way,I wouldn't go for an A3 over any other car,just because it offers quattro.