Lackey is going to be overrated and Montgomery is going to be underrated by metrics that try to normalize batted ball profiles. Montgomery is very hard to square up and gets a lot of groundballs, while Lackey is a strike thrower who has lost a tick and is now in an environment where more strikes than ever end up at or over the fence. Montgomery isn't perfect, and he hasn't seized the starting chance like I hoped he might, but he is still easily the 5th best SP we have. Yeah, this era has kinda ruined a ton of stats. xFIP made a lot of sense when most guys were going to regress back to the mean in HR/FB. For some guys, it wasn't a great measure -- but only for a handful on the margins that could or couldn't suppress home runs. And, this is just me talking out of my ass, but I think the hitter had a lot more of the say when a home run was hit. These days, any schlub can take a ball out of the park. So I think a guy who gets squared up more often has his problems magnified, when a scrawny middle infielder is going to drive the ball out of the park if it's left over the plate. Mistakes will hurt you more, so mistakes are more important. Also, xFIP, FIP, etc. are definitely calibrated pretty well. But, if the calibration is even slightly off, then this wacky environment could exacerbate those flaws. Also, say, FIP used to able to measure batted-ball prowess, without actually accounting for it, because good pitchers were good at everything. So, maybe strikeouts and walks were over-calibrated, when weak contact went hand-in-hand with strikeouts and walks. Change the era to one where there are more strikeouts, more walks, and more homers, and things can get really weird. It could be that a pitcher's batted ball profile is more important than ever. That's not even getting into the stats that are fucked up because of ballpark adjustments. Everything is really weird.