QoC isn't really comparable across teams, so you can't just do a league-wide ranking. If I'm reading the tables right at stats.hockeyanalysis.com, Couturier faces the toughest competition on the Flyers, as well as receiving the most defensive zone starts, and the least offensive zone starts on the team. He is absolutely getting the toughest minutes out of any forward on the Flyers. On the Canucks, Bo is... not. I don't think there's any one recipe to guarantee the development of a prospect, but for Bo, I'd lean toward not throwing him to the wolves next year, and continuing to let him develop an offensive game.
But what defines "toughest" minutes from an offensive standpoint? Is it Couturier facing the other team's top offensive forwards or is it Giroux facing the other team's top defensive forwards and/or D pair? I understand that possession time is the standard metric to gauge QoC, but I'm not sure that is a wholly intuitive approach.
And forgive my ignorance, but why can't QoC be compared across teams? In my albeit limited understanding if Couturier is truly playing "hard minutes" (high Corsi opposition) then isn't his relative score comparable to the minutes that Horvat plays? I mean they play in the same league and against the same players, albeit in different amounts. It isn't like the Corsi scores for the opposition are derived only from games against the Flyers or the Canucks, it is against all teams in the league. Thus the proportion of time against "tough" (high Corsi) opposition should be comparable across teams, no?
Just curious tbh.