Pitcher W-L is pretty much meaningless when talking about how good a pitcher is. Back in the Ol’ Hoss Radbourne days, it was all they had. But pitchers back then threw 300+ IP regularly and bullpens were made of starting pitchers on their days off. Also pitchers back then chewed tobacco bricks, guzzled whiskey, and punched out carriage horses.
ERA came along but was never meant to replace W-L; as teams started having dedicated relief pitchers, ERA was developed to measure THEIR effectiveness not only as pitchers but also compared to starters, which is why it is scaled to 9 innings. ERA is now probably the most widely recognized pitching stat, and certainly carries more weight than wins with most (almost all?) fans. It’s not without flaws, however. It’s influenced by defense and ballpark, both of which are not in the pitcher’s control. Being on a team with the best lineup also helps, since you never face them. I mean, facing Aaron Judge a few teams probably wouldn’t ruin Max Fried’s season. But never facing him certainly helps.
I look at the 2005 Cy Young going to Bartolo Colon when Johan Santana clearly out pitched him. But Colon pitched for the ALCS runner up Anaheim Angels while Santana pitched for a s***** Twins team. So Bartolo got more wins, which was the only stat where he surpassed Santana. I know some like to say “but the goal is to win.” But get real. Think Colon gets more wins than Santana if their teams were reversed?