Summing up playoffs where there have been ~82 games in between each season is a weird way of showing anything. Just show their playoff season splits, like so:
No one is going to argue that 2017-18 Playoffs Scheifele was not anything but a beast. That return from injury to the end of the postseason was probably the best stretch of hockey we'll ever see from him, and it's obviously why he's in so many conversations about the best-underrated centre. What you miss out is that 2017-18 Playoffs Ehlers wasn't that far behind. Insanely better metrics across any shot type, except xG. That one-two punch (in terms of first and second line) should have gotten us to the Stanley Cup, if Fleury didn't steal that series.
Then you get into 2018-19, where both players pretty much just took a 5-10% drop against all shot metrics. The difference being, Scheifele's on-ice Sh% stayed high (although the on-ice Sv% suffered too (because, y'know, him and his line of Connor-Scheifele-Wheeler have been giving up just as much as they were getting, like we saw the entire regular season) leading to just a 50% GF%), meanwhile Ehlers' was a big ol' fat 0%. Which, y'know, everyone expected; because after
only 30 minutes of Ehlers-Hayes-Laine not scoring, Maurice gets trigger-happy and reunites
Ehlers-Little-Laine which had struggled at the start of the season (and saw the same result in the playoffs).
A 0% Sh% nearly happened in the Play-In series the next season too, except he scored (and was the only one to score when he was on the ice at 5v5) alongside the likes of *checks notes* Kyle Connor, Blake Wheeler, and the player he spent the most TOI with (drumroll please!) ...Cody Eakin. Meanwhile, Scheifele gets injured.
Scheifele's been "a beast in the playoffs" for provably just one season. Ehlers nearly met that mark in the exact same season. It's just that Ehlers' reputation dropped like a stone because there was a significant (and predictable) lack of scoring on his line for one playoff series, and then people go and see he put up 0 goals in 2017-18 and 2018-19 and all the sudden he's not a playoff performer, ever. It's always been a weird conclusion to come to.
Scheifele
hasn't ever gotten back to that 2017-18 form. Ehlers, meanwhile,
kept on ticking for two more seasons.