Because Granlund has been able to repeat his success. Fiala has not.
Granlund was already a 40+ point player as a center, then moved to wing and became a 60+point player.
Granlund's struggles are comparable to a slump, Fiala has yet to even breakout in the first place.
Granlund had two seasons as a 45+ point player.
Fiala has had two seasons as a 40+ point player.
Both of their struggles are comparable to a slump.
Both of them started with their old teams and continued to their new teams.
Both of them have had ~30 games with their new teams.
It's the exact same situation. Exact same. The only difference is that Granlund scores more points both during their high years and their low years, but it's the exact same situation.
Both of them are underachieving when compared to levels they've hit previously.
How do you not see this?