Let's be honest, Riley's "turnaround" at USC is the result of an underachieving program bringing in a top flight quarterback from OU and the Biletnikoff winner from the portal—as well as the fact the PAC-12 is trash and the Trojans don't play on ranked team all season.
Heupel is also in his second year at Tennessee, not his first. The Volunteers went 7-6 last year and are 5-0 out the gate this season.
Kiffin is also in his third year at Ole Miss, not his first—going 5-5 in 2020, before 10-3 last year and hot out the gate at 6-0 this year.
If you're going to try and compare these guys to Cristobal, then you start the clock year two like Heupel and Kiffin are getting judged by, or you give him some of the puzzle pieces Riley landed in Troy as it's hardly an apples to apples comparison
Let's see what Miami looks like six weeks into the 2023 as it's pretty premature for a team that went 7-5 last year and 21-15 under the last regime all together.