They all seem pretty even, in terms of 2023 expectations, and really, that should be the issue.
Nate's future is always a big question mark, mainly because of his health, but he's also had dips in effectiveness about as often as spikes of the leat 4, 6, 8 or more years. His peripheral numbers in 2022 were down.
Hill keeps chugging along, even at age 42, but one keeps wondering when the bubble will burst. Was it agreed that he'd take the spring of 2023 off?
Wacha's 2022 could easily be viewed as a fluke or an outlier. He's probably the hardest to project.
Kluber is a risk, too, but his injury was long enough ago to get a pretty good idea of what to expect- maybe easier to project than Nate, Wacha or Hill for 2023. He has 37 starts since Aug 30, 2021. Good enough for me.