Never had a chance to drive a PASM car on track and at a guess I would imagine that its very solid/rigid response to bumps would not cause a problem. On a bumpy UK road all I know is that you lose some of the extra confidence you might have in a non PASM car fearing it is about to hop/skip across the road into a) an oncoming car or b) a bush.

The difference may be minute but it was enough for me to sense and that was before I ever read any journalists views.