He wasn't recruited highly when he was a 6-2 sophomore and junior point guard, but when he grew to 6-11 and still had the guard skills, he took a huge leap, and he continued to climb all the way to #1 as his senior season progressed.
Calipari did some development with some of those guys, but it is overstated very often. We all know that he always recruited the top end players. And in some of those early years at UK he got a lot out of those guys. But in these later years he took great talent and underachieving over and over again.
The reason Cal won that 2012 title is because the NBA lockout that in 2011 kept Terrence Jones and Doron Lamb around for an extra season. Those 2 were #2 and #3 in scoring. Lamb was the best shooter on the team. Jones did a bit of everything. Otherwise, that season would have not been a success. If Cal pushed those guys out, as per his usual, that team would have ended like the rest of his teams at UK.