I think this is mostly about Boras making a statement. The highest arb ever was Price at 19.75. The largest jump from arb year to arb year was just under 10 mil. Yes these were several years ago and need adjustments. Even so, Boras is requesting the arb jump to be 22 mil, more than double the largest jump ever. And his request is 12 mil over any arb ever.
To me Boras is making a statement to forget about what any other pitcher has ever made. This is Skubal. And I think Boras' initial FA expectation for Skubal will be similarly historic, something like 10/500. He won't get that, but barring injury or huge drop-off this year, that's what I expect to see next off season. Of course the CBA issue could change everything.