So three blue jackets > Werenski = Hughes is better?
I'm not good with stats, I know; I shouldn't be posting on HFboards. But I really don't understand how a player makes his team better (Hughes) when they all have a +/- in the negative and all of the having bad years. While everyone on CBJ is having career years and i bet all of them would say Werenski is a big part of it. You act like Werenski is in the same situation as Makar, who has a couple elite forwards, I can understand that comparison, but CBJ doesn't have Elite forwards to form a true #1 line. If players like Marchenko, KJ, Voronkov & Fantilli score over 50points, it will be their first time in their career.
Okay, I'll break it down more since you seem genuine, and my post is extremely long and has a ton of info, I even edited to add more before you quoted it, but this one will be long too.
Corsi, Fenwick, and xGF are measurements used to see who controls the flow of the game, this is usually done by measuring shots for/against (corsi), unblocked shots for/against (fenwick) and probability of shots resulting in goals using danger level and historical shot data (xG).
We're going to ignore +/- because it's not very good at predicting future hockey stats, if your goalie is worse your +/- will be worse, but the above stats don't consider actual goals, just what is most likely to lead to a goal.
Firstly, while Werenski DOES benefit from ice time with Monahan, it's nowhere close to the degree that Makar benefits from MacKinnon (chart 1), Werenski has actually been much better than Makar this year! Secondly, you'll notice in the stats I posted, none of them mentioned actual points. I'm only concerned with shots taken on the ice while Werenski is out there.
The third chart I posted says every 100 shots taken (corsi) when Monahan (I only used him to represent his line) is on the ice without Werenski, 53 of them are taken by the Blue Jackets while 47 of them are taken by the other team, but when it's the other way around, the Blue Jackets only take 48.7 of every 100 shots. It's a similar number for unblocked shots (fenwick) and expected goals (xG%). When Hughes is on the ice, even without Pettersson or Miller, the Canucks regularly take 60 out of every 100 shots, which is an absurd percentage.
Yes, you are correct that Werenski is a huge part of CBJ's success, however even among CBJ players, he isn't the most effective at tilting the game in favour of their team. The Monahan line is the only line that can effectively (more than 50%) control the flow of the game no matter who is on the ice. This isn't to say that Werenski is bad or inneffective, he is better than the CBJ average so he's not a detriment.
This is all to say that while Werenski is extremely good, Quinn Hughes is a generational talent at controlling the flow of the game. Werenski's possession stats are about 5% higher than his teammates average, but Hughes' stats are regularly over 16% higher relative to his teammates.
For reference, McDavid, Draisaitl, Kucherov, are all about 7%, and Werenski is just outside of that range, which is extremely good, but Hughes controls the flow of the game like no other player in the league.