Sure. Let's do 2019-20, Eichel's most recent healthy season.
In 2019-20, Jack Eichel put up 78 points in 68 games for a rate of 1.15 PPG. His nearest teammate was Sam Reinhart who put up 50 points in 69 games. The second best clip on the team was Viktor Olofsson with 42 points in 54 games for a clip of 0.78 PPG. Jack Eichel scored 56% more than his nearest teammate in raw totals, and he scored at a 48% higher clip than Olofsson.
Let's look at by how much the players you mentioned outproduced their teammates.
- Aho scored 68 in 68, Teravainen 66 in 68, Svechnikov 61 in 68.
- Barzal scored 60 in 68, Nelson 54 in 68.
- Matthews scored 80 in 70, Marner 67 in 59, Tavares 60 in 63, Nylander 59 in 68.
- Draisaitl scored 110 in 71, McDavid 97 in 64, RNH 61 in 65.
- Point scored 64 in 66, Killorn scored 49 in 68, Hedman scored 55 in 66, Stamkos scored 66 in 57, Kucherov scored 85 in 68.
- -21 points! Won't even bother!
- Barkov 62 in 69, Huberdeau 78 in 69, Hoffman 59 in 69.
- -16 points! 26% less PPG!
- Eichel scored 78 in 68, Reinhart 50 in 69, and Olofsson 42 in 54. 28!
Am I going to have to do some more math, maybe draw in some advanced statistics, or is it clear to see that Buffalo won't be going anywhere since there aren't enough people on that roster near Eichel's level? Wax lyrical about scoring depth, the importance of a good defensive core and goaltending? The impact of coaching not only on evens, but PP and PK?
P.S. McDavid and Draisaitl both passed 100 points in 18-19. Their team picked #8 overall that year after having picked #10 overall the year previous. Lots of talk about an unhappy, dysfunctional locker room. I guess McDavid stopped contributing to a healthy, winning environment after the 2017 playoffs before checking his attitude for 19-20.