Markstrom is a weird goalie.
I'm admittedly lazy right now, so I'm not gonna hard declare, just a soft declaration.
I looked up his stats the last few years using I think all three sites? Maybe I left off natural stat trick. Their site is too hard for me to read sometimes.
I think both evolving hockey and moneypuck seemed to be somewhat in agreement that Markstrom's 21-22 (Second in Vezina I think?) wasn't as good as his overall numbers, nor was his 22-23 as bad as his overall numbers that year.
He was pretty solid for much of his time in Vancouver, at least until after he became a regular (Travis Green's system is easy on goalies perhaps?!
), but seems to be back and forth in Calgary.
Just going with moneypuck right now because their site is more convenient and reader friendly (doesn't mean they're the most accurate, but they are the easiest to read and have more numbers and features than evolving hockey) he wasn't THAT bad last year. Their model has him as just breaking below even in GSAx. Like by -0.005 per 60. His expected save percentage was .893% and he was .892%. Maybe this is because everybody stopped playing for Sutter? I don't know, but that's even lower than Vitek's expected save percentage behind this year's team, so they really have them playing pretty badly last year.
For that HUGE season he had in 21-22? They only have him as a +0.175 GSAx per 60 and a save percentage 4 points above expected. His expected save percentage on their model for that year was .918% and he was a .922%. They were playing about as good that year as they were bad last year.
They have his 20-21 as even worse than 21-22. That may be his worst year since he became an NHL regular. They have him as a -0.224 GSAx and a save percentage 4 points below expected. That was only the 56 game covid season, where he only faced teams based in Canada. It also was the season which featured the coaching change from Geoff Ward to Darryl Sutter. He played 43 games that year though.
If you look at his Vancouver seasons on moneypuck, he's flirting with the even line. Sometimes dead even, and slightly above to slightly above, despite league average/above league average save percentages. These are looking at his full seasons in Vancouver. Not his earlier years where he played a few games a season.
Perhaps what we can take from those is Travis Green's system forces goalies to face much easier work than Ruff's?!