You do realize that was 5 and 6 years ago. Granlund did near as good playing with Zucker and Koivu. Had a 64 point season since with Nashville.
Down year last year Forsberg (only 50 GP) was out Duchene missed time. Barkov/Huberdeau a notch over Duchene/Forsberg who were more PPG guys than those two.
So you say he sucked, but 11 goals and 53 assists sucks?
What's Dadonov doing these days? Granlund put up 64 and was pacing for 50 with Forsberg missing significant time.
1) I do not believe that what a player did 5 or 6 years ago in the NHL is relevant to who they are today unless they are clearly the same athlete, which is rare and not the case with Granlund.
2) As a high water mark for a 3 year period of playing first line minutes and PP, 64 points is at best mediocre. Break down the year and you start seeing things that sucked such as 11 goals at all strengths, and 29 points in 1100 minutes, mostly with very good players.
The one thing he did well that year he did at an elite rate - Power Play Assists. Top 5. But as he hasn't been anywhere near that rate of scoring since 2018-19, it's best treated as one of those random aberrations hockey throws up.
So his best year consisted of him mostly sucking combined with a freak performance. And his other years are kinda sucked and absolutely sucked.
It should also be noted that he played more with Forsberg at 5v5 than any other forward last year. Did he put up fantastic rates of scoring with him that were betrayed by playing with lesser talented? At 1.12 p/60, no he didn't.
3) A further not amazing half-season saw Dadonov valued at Shea Weber's LTIR, then a struggling Gurianov after being retained at 50%. If people want to use that as proof for the idea we might get something for Granlund at 50%, I guess it's not utterly illogical.