The only relevant question is whether or not salary has been an obstruction for Stoops in his hiring process. Has he ever had an "elite" coach willing to come to UK, but they couldn't pay what it took to make that hire?
You don't just overpay mediocre assistants because the rest of the SEC pays a high rate for top level assistants. I'm not sure that there is any way to know whether or not the guys on UK's staff would be on any other SEC staffs or if they would be paid more.
Truth is that if UK is underpaying these guys based on their abilities, other big time programs should easily be able to poach them from UK. This doesn't seem to be the case.