EDIT to aboveYou have forgotten more about college baseball than I ever knew. IDK how valid their criteria is but, per this source, over the past 4 years (2016-2019), UofL recruiting has been average ranked at #17.5; UK at #18.5. For 2020 they rank UofL #12 and UK #14 but UK does have 2 more recruits than UofL. I don't follow this stuff at all but that would suggest very similar overall "talent" meaning the bulk of the performance difference is "coaching".
Cats definitely played a stronger schedule last year but, FWIW, I always find SOS to be a tricky thing to "quantify". Consider UofL football last year; #15 SOS per Sagarin. At some point it is not about "how good are your opponents" but "how bad are you".
Peace
A subsequent post reminded me the 2019 class is not here yet.
FWIW, for 2019, the top 6 classes are Vandy, LSU, FL, MS, aTm and MSU - more SEC dominance than in football. Those 6 schools signed 35 of that site's Top 100 prospects. UofL got 3, UK 1.