No, Vancouver certainly does not have a great team.
Now, would I take Vancouver's "core-three" over something analogous from LA (e.g. Byfield, Clarke, Petersen)? Yes, obviously. The issue is though the Canucks have an "excellent core to build around", they have absolutely no resources to do any building with. The Canucks are in a position where they have to subtract from their roster just to manage the salary cap. They've had an annual draft pick deficit stretching the entire Benning era. They have one of the worst prospect pools in the league.
Meanwhile, LA is already improving, has tons of cap space, tons of prospects, and tons of draft pick capital. And they're using that to add impact players to the roster (e.g. Arvidsson, Fiala) as their core prospects mature.
Vancouver's core is better. But it will be a monumental task for Allvin to actually build a better team at this point.