Citing the win/loss record and ERA is certainly old school.
FanGraphs and MLB Trade Rumors ranked Rick Porcello No. 43 and No. 46 among free agents this offseason:
https://blogs.fangraphs.com/2021-top-50-free-agents/
https://www.mlbtraderumors.com/2020/11/mlb-free-agent-predictions-2021.html
... ahead of Jake Arrieta, Anthony DeSclafani, Mike Fiers, Jon Lester, Homer Bailey, Brett Anderson, Aníbal Sánchez and Cole Hamels. The San Francisco Giants signed DeSclafani to a one-year contract for $6 million plus incentives.