The Canucks only control their destiny over Vegas, not the other teams. The issue is they aren't chasing Vegas. Canucks need several losses from LA, Nashville, and/or Dallas to have a shot. It's more likely LA wins out, rather than the Canucks, given the strength of schedules.
Vancouver:
86 points - 6 games (12p) = 98 max
Senators, @ Wild, @ Flames, Kraken, Kings, @ Oilers
2 non-playoff teams, 3 playoff teams, and the team they are chasing.
Los Angeles:
90 points - 5 games (10p) = 100 max
@ Ducks, Blackhawks, Ducks, @ Kraken, @ Canucks
4 non-playoff teams, and the team that is chasing them
Nashville:
91 points - 6 games (12p) = 103 max
Flames, @ Lightning, Wild, Flames, @ Avalanche, @ Coyotes
1 non-playoff team, 5 strong playoff teams
Dallas:
91 points - 6 games (12p) = 103 max
@ Oilers, @ Flames, Kraken, Golden Knights, Coyotes, Ducks
3 non-playoff teams, 2 playoff teams, and the team that is chasing them
Vegas:
87 points - 5 games (10p) = 97 max
Capitals, Sharks, @ Stars, @ Blackhawks, @ Blues
2 non-playoff teams, 2 playoff teams, and the team they are chasing
Given how the schedules work out, Nashville will have the hardest time and the Kings have the easiest. I'd rank it something like this; from easiest to hardest.
1) Los Angeles
2) Dallas
3) Vancouver
4) Vegas
5) Nashville
With Los Angeles and Nashville being very different than the three in the middle.
Edit: In terms of tie-breakers, the Kings currently have the tie-breaker over the Canucks (31 RW each but LA has 36 ROW compared to Vancouver's 35 ROW). Nashville and Dallas also hold the tie-breaker over the Canucks (35/41 and 33/37). Canucks have the RW tie-breaker over Dallas (31 to 29) but less ROW (35 to 39).
I'm not sure where the narrative is that the Canucks hold the tie-breakers since they are behind everyone but Dallas. It does show that the Canucks don't just need wins but need regulation wins or, failing that, OT wins.