If that were the case then two drivers would just keep swapping positions over and over again.
Faster car gets hindered by dirty air, which makes it harder to pass. DRS completely negates that effect by pretty much giving a free pass within the 1s zone. That's what I mean with DRS compensating it too much.
A slower car has next to no chance to finish higher up than it should performance wise, because it's always a sitting duck because of DRS.