Year 1: 69 points in 82 games (40 goals) - (0.84ppg)
Year 2: 63 points in 62 games (34 goals, on pace for 45 goals, 83 points over 82 game season) - (1.02ppg)
Year 3: 40 points in 30 games (2o goals, on pace for 55 goals, 109 points over 82 game season) - (1.33ppg)
We've also learned this year that it does not matter who Matthews plays with this year because he'll still up monster numbers. He doesn't need Nylander, Kapanen, Johnsson in the same manner they need him. The fact that people are still wanting more from this guy despite being on pace for 55 goals and 109 points at 21 speaks to his ultimate potential. Matthews is in a slump now, but the way he was playing to start the year up until his first injury...I wouldn't trade that player for anyone in the league, including McDavid. He'll get back to that player, he needs consistent line-mates and the playing time a top 5 center in the world deserves.
For as great as Marner and Tavares have been, they've also had the chance to play with each other the entire season and build that chemistry. Regardless if Hyman, Brown or Johnsson are on that line, those 2 always play together. Matthews doesn't have that luxury.
I think most people would admit Matthews and Marner are the top 2 players on this team. How different would their numbers look if Matthews and Marner played together and Tavares had Kapanen and Nylander? Even on the Oilers, McDavid still plays with Draisaitl who is their second best forward and a legit first line winger (There's a reason the Oilers don't consistently try LD to drive his own line...doesn't go that well). Matthews though?