If you want me to respond them it's very simple.
What do you think happened around 1976 that changed the dynamics of the Tennessee/Florida series from say the previous 100 years?
Before the early 70s, the SEC was an overwhelmingly white conference. All the players were white. Little by little, however, black folks started making up more and more of the player pool. Its no surprise schools like Florida, Florida State, and Miami all took off around this time. Before the 80s, the Florida schools were not special. Since then they've owned college football. The state of Florida has a larger population of African Americans than any other state in the union except New York and Georgia (which are only slightly ahead of Florida).
Tennessee in contrast has only 1/3 the African American population of Florida and thus a smaller player pool.
We sustained better success against Georgia (eventhough Georgia has such a large African Americans population) because for most of the last 40 years because we (along with the other SEC powers) have raided the state of Georgia of many of it's best black players. If Georgia ever locked down the state, no one would ever beat them. This is the reason Saban says it's the best job.