Yeah clearly the starters' W/L record has much less direct relationship to the pitcher's actual performance these days. At least quality starts give them credit for doing a decent job, regardless of run support and bull pen performance. A perfect example was the other day when Ryu pitched , as I recall, 6 solid innings and left the game with a nice lead only for Bass to blow a 3 run lead in the 9th (at least Bass didn't get the W, not that a W helps much for a late reliever).
I think I posted on another thread the Jays had a good chance for a PS berth if the veteran starters pitch well and carry them, like in 2016. That year, as I recall, the Jays starters combined to lead (or be right near the top of) the MLB in innings pitched, quality starts and combined ERA. Of course even ERA can be a much less than accurate barometer when you have defensive issues (plays that should have been made) and sometimes just plain bad luck (like the 1st inning yesterday).
At the end of the day , I guess FIP is a good measure although it does favor strike-out pitchers.
P.S. - nice try to make me look dumb - better luck next time:p