Regarding the bolded, in fact, you are wrong. Some of the "advanced numbers" do, in fact, try to account for teammate effects. Some of the metrics I used, like Evolving Hockey's RAPM and HockeyViz's Isolated Impact do just that - as well as quality of competition.
At this point, your argument is basically just appeal to authority of some GMs. Some GMs (very often) get it wrong! No other GM wanted to give Suter more than $1.6M x 2, do you think they were right about that? No they weren't. Clearly Suter provides a lot more on-ice value than that. Like, you're convinced that what Brad Treliving values in terms of fit/role is actually correct. Uhh...looking at the track record of the Leafs, I would not be that confident. This guy gave Ryan Reaves a multi-year deal. I'm not sure his judgement is infallible.
Now you're using a one-game sample to say that Suter is bad and slow because he got "overmatched" by STL. I could easily point to his game against NJ where he was the Canucks 1C, got hard matched against Hischier, and dramatically outplayed him.
Again, I'm not saying all of those teams would swap what they have with Suter. I'm saying that Suter is absolutely, unquestionably a better player than Domi or Laughton and you are wrong to think otherwise. The guy is miles better defensively, a top-end PKer, and a wash offensively. In my mind, that is "leagues better".