Why would Kucherov's season be any better or even as good as McDavid's 153? McDavid had way more goals and a likely a much bigger separation from peers.
Bigger separation from what peers? From teammates? Kucherov has a bigger separation than McDavid from his teammates (he doesn't have a Draisaitl scoring 128 points...). From others in scoring race? I don't really see how that's relevant, since all of Kuch/McD/Mack are outliers this season. Other than outliers, separation from others in scoring race is pretty comparable past 2 seasons.
It's true McDavid had more goals. And until proven otherwise, Kucherov won't touch McDavid's 153 points. I just disagree on the rest.
One thing worth pointing out is scoring is actually down from last year. So 153 points last season vs....slightly less this year may end up being a very close comparison.
According to hockey-reference's adjusted points - they have McDavid at 146 last year, and Kuch on pace for 139 this year, and this was before last night's 4 point game for Kucherov. I assume when they update it today, it'll be around ~142-143 for Kucherov adjusted pace. Hockey-reference's way of adjusting numbers is hardly flawless, but it's a good point of reference, and shows the two seasons are very close.
Bottom line is McDavid last season is still a better season than Kucherov this season - but it's no longer a really big gap, and Kucherov isn't done yet, so who knows if he's able to bridge the gap even more.