You’re quite literally paying the same amount for less production than your direct competitors which is a competitive disadvantage when you are held to the same cap. You can look across the entire division and point to plenty of players who are better than Nylander that make 9.5M or less: Stutzle, Thompson, Point, Kucherov, Tkachuk, Tkachuk #2, McAvoy, Hedman and arguably Larkin, Debrincat, Stamkos.
All of these players are within the same division. It’s a competitive disadvantage to pay more or equal for less production.