The test seems very positive to me. Of course if you put big 235/50R18 tires to any car in this class (not just the A4) then you will have running noise.
On the other hand i would prefer a bit of running noise to the unbelievably small runflat tires 3 series uses. Even 320i has 205/55R16 tires as standard!

I would wait to see more tests if i were you.