Any realistic assessment of this team should include a few caveats. The primary one being that everyone pegged this team as solidly a below average bubble team during the off-season. Looking at most of the underlying metrics surrounding this team support this year still support that assessment. We give up the top-6 most attempts against in the league, we're decidedly league average and below .500 in CF%, riding the highest SV% in the league with a top-6 highest PDO. The only encouraging number I can find is that our CF% Close is high, top 8 in the league. But most these aren't the numbers of a top-3 in the league team.
You can decry advanced stats all you want, talk about the Stevens System, higher quality chances, and whatever, but the fact remains: Without Quick and Kuemper playing out of their minds, we would not be where we are in the standings today. If the bottom ever falls out from our goaltending, we're giving up way too many chances and being out-possessed far to often to be a top team.
If we don't right the ship defensively as the season goes on (and we have started to make improvements in that regard over this 5 game stretch), I'd feel totally comfortable in saying that eventually we'll see a hard, painful regression to the mean.