Pastrnak's got 3 less points and 11 more goals despite Bergeron missing half the season (same thing as last year, Marchand and Bergeron both missed 20 games or so) so the linemate argument is invalid (especially "just JT").
As far as Stamkos I've hardly been a fan of his lately but this is Marner's first elite season while Stamkos has had multiple, as you said with Eichel, one good year from Marner and all of a sudden he's better?
As for Eichel, he's been better every season so far, he's had injury issues that restricted him to 60ish games per year and still put up very similiar point totals, more goals and way higher PPG than Marner.
Marner is on par/slightly worse than Pastrnak and Eichel still, he's better than Stamkos.
And? Marchand is equal to JT, is Hyman better than Bergeron? Just lol.
And Marleau's career>>>>>>>>>>>>>>Petterson, who's the better player now? Exactly. Furthermore Marner's career totals have been depressed due to:
Having awful defensive linemates like Bozak and JVR
Being demoted because muh gud pros like Brown and Hyman can do no wrong, therefore Mitch should play with Martin and Komarov because muh grit work ethic gud proness
Not getting a ton of TOI or even PP ice time
His final 2/3 of the season showed his true potential. Furthermore, we're not talking about Ovechkin aka an uninjured and non-damaged player, we're talking about Stamkos whose career was completely sidelined by injuries.
In what insane world is LOWER ppg, LOWER points while getting 1 minute MORE ice time and 1.5 minutes MORE PP ice time better? Eichel is absolutely not better.
Absolutely not, Marner has been better than Eichel every year and we've never seen Pasta have to deal with the nonsense Mitch has gone through, so no on him as well.