There is a tendency among some Wings fans to act like Dats and Zetterberg were superstars the minute the came into the league, and that everybody knew all along that they'd be great. But it isn't true. When they came into the league they looked like Tatar and Nyquist do now...except maybe not quite as good.
You're overplaying your hand. Zetterberg was on the Swedish Olympic team as the only non-NHL player before he joined the Wings. Obviously someone thought he was pretty notable lol.