There are multiple ways to win. You can have a couple of really high-end players that drive your success (see Edmonton or Colorado), or you could build a roster with less top-end star power but more depth.
Look at Dallas right now. Who are their top-end guys?
You have Heiskanen, Robertson, Johnston, Hintz and then a lot of good depth (Benn, Marchment, Duchene, Lindell, Stankoven, etc). But none of those players scored over 80 points last year.
There's not a lot of wow factor on that team, but they're one of the top contenders for the Cup. If you look at the most recent TSN top 50 list, they have 3 guys on it (Heiskanen at 25, Robertson at 33 and Johnston at 50). Not exactly blowing the doors off the elite.
When Vegas won the cup, they didn't have a single PPG player in the regular season. Neither did St. Louis when they won.