Quoting: Islesforthecup
Its not close. Nylander is a consistent elite offensive player. Bertuzzi had 1 season at a better than ~50 point pace.
Technically that is not true.
He's been on over 50+ point pace on every year since 2018-19 on a full year basis.
It's not exactly his fault the seasons have been cut short or he's got some injuries to deal with, but thus far his totals have been
2018-19: Scored 47 points in 73 games, which equals to 53 point pace in 82 games
2019-20: Scored 48 points in 71 games, which equals to 55 point pace in 82 games
2020-21: Scored 7 points in 9 games due to injury, which equals to 64 point pace in 82 games
2021-22: Scored 62 points in 68 games, which equals to 75 point pace in 82 games
Let's compare this to Nylander's point pace in 82 game seasons
2018-19: Scored 27 points in 54 games, which equals to 41 point pace in 82 games, granted this is his worst year by far and was influenced heavily by him sitting out for the early season
2019-20: Scored 59 points in 68 games, which equals to 71 point pace in 82 games
2020-21: Scored 42 points in 51 games, which equals to 67 point pace in 82 games
2021-22: Scored 80 points in 81 games, which equals to 81 point pace in 82 games
To summarize, Nylander has an edge towards Bertuzzi in terms of scoring, but in terms of scoring pace on a yearly basis we're talking about around 10 point difference per year, and more recently not even that. To add here, Bertuzzi plays better two way game and at least compared to Nylander he also plays in significantly worse team which definitely has an impact to those numbers.
My conclusion based on these very basic readings is that Nylander is probably the better player of the two, but the difference is much closer than you think. And if Bertuzzi had more term in his contract I'd perfectly understand why DET fans would decline trading Bertuzzi for Nylander, even though right now I'd still perceive Nylander to have more value of the two.