Quoting: MitchMarnerElite
I agree that Marner is a better player than Kessel right now, but I don’t see the argument for him if you’re comparing to Kessel’s prime. Marner may be the better defensive Forward & possession driver but Kessel was able to put up 40 goals & 80 points with Bozak as his center. Perhaps Marner can have a bit more value but he wasn’t better than Phil.
1- Kessel never put up 40 goals with the Leafs, he put up 37 and 80 points in his 2nd last year with them, sure. but not 40 goals
2-Kessel had just had a season of 26 goals and 61 points in 82 games before he was traded, he was 27
3-Marner's best year as a leaf (so far) was 26 goals and 94 points in a full season a whole 5 years younger was during his best season
4-Marner just put up 16 goals and 61 points and 67 points in 59 games at the age of 23
So, at the time of their 'trades' Marner has had not only a better recent season, but a significantly better most recent season and he's significantly younger which increases his value.
Marner is not only more valuable, he's better