-Lack gives the Canucks the best chance to win.
And Luongo doesn't? This isn't starting 1B over 1A. Luongo has the stats, experience, etc.
-Luongo hasn't played in 3 weeks. Don't put him in cold.
You know who else hadn't started in 3 weeks? Anderson, and he started yesterday. And if every game is important, then when do you put in a cold Luongo? Next two games are Phoenix and Dallas, who are right near the Canucks in the standings. Save him until Saturday's game against Calgary? Ottawa is/was 10th in a weaker Eastern conference.
-It's just another game.
No, it really isn't. Bigger crowd, different environment, different lighting, etc.
-Luongo can suck it up. He's been through this before.
Yep, he can definitely handle all this. After all, he hasn't started a meaningful game since 2011. Facing elimination in the 2012 playoffs? Start Schneider. Facing elimination in 2013? Start Schneider coming off an injury. Olympics?
Sure, Lack didn't play badly yesterday but you can't pretend the crowd chanting for Luongo didn't affect him. Luongo can tune it out but can Lack? He's playing in one of the biggest hockey markets in the league. And he's not "just the backup" anymore. He's a legitimate starting option to the best goalie the Canucks have ever had. That's a lot of responsibility and pressure for a rookie.