All three of those players are better* than Wilson tho
Kerfoot puts up similar point totals in much less TOI with worse linemates, is sneaky good defensively (lovely xGA numbers) and has a better penalty +/-
Points since 2017
Kerfoot 113 points in 221 games
Wilson 119 points in 209 games
The Marner trade may be sorta fare in value, but the Avalanche have no need for Marner, after all they have Rantanen, who imo is better.
A 2C a future 1C (on most teams) a top 4 d prospect a solid vet d and a 1st is a massive overpay for a high priced albeit high quality winger besides crippling their depth at c.