Canucks, due to several factors.
Potential matchups, as covered above.
Puck luck regression - the PDO talk about them was done to death in the first half of the season, I don’t think any of us need that rehash.
Playoff n00b factor. In the NHL more than most sports, getting over the mountain takes a period of years building up your squad, and that includes years of losing in the playoffs because you literally just haven’t been there done that yet.
Standard NHL playoffs disclaimer: any team can beat any team, one hot goaltender, etc.