Calipari's true genius is identifying talent. Say what you will about the man, but he gets it "right" more than anyone else (Kobe Bryant and the 1996 draft notwithstanding). It's one thing to recruit a John Wall or an Anthony Davis. Everyone and their grandma knows those guys are going to be generational-level prospects. But it's in those places between the cracks that Calipari is unlike any coach in the modern era. He has a knack for identifying players who have long term potential, and if he was not coaching, I feel he would have excelled as a general manager.
Cal's recruiting downswing from 2015-2022 regarding RSCI top 5 guys did not really put him at a disadvantage with Duke as far as long-term prospects are concerned. Yes, Duke landed the "big fish" guys like Jayson Tatum, Wendell Carter, Marvin Bagley, Brandon Ingram, and Jahlil Okafor during that span, but Calipari might have come out on top, even during that span, when it came to recruiting and landing guys who had better long-term NBA potential.
Take a look at some of these guys who Calipari recruited who were not RSCI top 5 guys.
Shai Gilgeous-Alexander #30 RSCI - max player, future NBA All-Star
Nick Richards #18 RSCI
Immanuel Quickley #23 RSCI
Tyrese Maxey #10 RSCI - future max player, future NBA All-Star
Tyler Herro #35 RSCI - semi-max player
Keldon Johnson #12 RSCI - semi-max player
Isaiah Jackson #26 RSCI
Jarred Vanderbilt #13 RSCI
Jamal Murray no RSCI due to reclassification - semi-max player, future NBA All-Star
De'Aaron Fox #6 RSCI - Max player, future NBA All-Star
Bam Adebayo #8 RSCI - NBA All Star
Malik Monk #9 RSCI
PJ Washington #14 RSCI
Devin Booker #23 RSCI - NBA All Star
Tyler Ulis #18 RSCI
Trey Lyles #12 RSCI
Oscar Tshiebwe #28 RSCI - NPOY