The article is using info from pff rankings. (info is also from the 2022 season)
This past season was Williams' first full season at center, and he certainly impressed with his career-high 78.5 PFF grade. It wouldn’t be fair to put that improvement exclusively down to the move to center though, as Williams improved throughout his career at guard with the
Dallas Cowboys before that. At just 26 years old with five seasons under his belt, it wouldn’t be a shock to see his ranking jump a few spots next year.
Morse isn’t great as a run blocker, as he hasn’t topped 60.0 in PFF run blocking grade since 2019, but he is a really reliable pass blocker. In his eight-year career, Morse has finished every season with a 70.0-plus PFF pass-blocking grade. At worst, he is a top-15 center entering 2023 on the back of his pass protection alone.
Both Biadasz’s PFF pass- and run-blocking grades took a dip in 2022 after a pretty encouraging first year as a full-time starter in 2021. His 60.5 PFF grade in 2022 saw him end the season as the 24th highest-graded center in the league.
https://www.pff.com/news/nfl-pff-center-rankings-top-32-ahead-of-the-2023-nfl-season