Vladar is
90th in goals saved above expected, 73rd in save percentage above expected, 74th in GAA above expected. He's 50th in goals saved among expected for goalies with at least 10 games played.
The Flames, when coached by Sutter, are a team that seem to result in strong expected save percentages. Even Markstrom, with an elite season, is only 12th in that regard.
I don't think Wolf would be much, if any, lower than 90th. Practically every good goalie in the league played in the NHL by the age of the 22 (many of them starters by that point). Wolf probably isn't that far off.
But development is key, and a full year in the AHL was obviously good for Wolf's development. I believe the Flames are one of only 3 teams in the NHL to play only 2 goalies this year. Wolf actually had a pretty good chance of getting some games this year. But the team was relatively healthy and it just wasn't necessary. I think he should, and will, get some NHL time next year.