I don't think using the above teams was a poor argument at all. None of those teams were expected to do anyrhing just like the rangers. The Devils and Colorado did not make playoffs the previous year and were not expected to make it last year as well by any of the pundits. Colorado had the least points in the league and were an absolute train wreck and turned it around big time. Did you expect Mackinnon or Hall to actually have 90+ point season? Nobody had the expansion Vegas Knights to sniff the playoffs let alone make it to the finals. Did you have any idea that half the team would have career years? How do we know how Chytl, Anderson, ADA, and others are going to play? Maybe Kreider or Zibs or Buch have a breakout year? Maybe we surprise some people? Who knows?
It's a poor argument because you're not taking all of the variables into account.
Saying that those teams were better than expected is true - but when you look at why they exceeded expectations, there really is no comparison to be made to the team we have right now.
We don't have a Hall or Mackinnon on the roster. I'm not even sure we have a Rantanen on the roster. Expecting a half dozen guys to set their career highs (or more than double their career point total like Karlsson did for Vegas) is wildly unrealistic (this is before getting to guys like Tuch and Theodore also having better than expected seasons.)
This is basically saying that if Chytil and Andersson finish 1-2 in the Calder Voting, DeAngelo puts up a 50 point season, KZB all break 70 points,Hayes continues to improve and Hank can at least match his performance from last year then sure, they'll blow past what is expected of them.
Yeah they would if all of that happened, but it's much more likely that none of those things happen then all of them.