If You ask me I believe north Florida has the coaching advantage Where As the south has the over all athletic/speed advantage.
Which is why a a below avg north Florida team with great coaching can come to south Florida and play a avg to above avg south Florida team and beat them or go toe to toe with them.
As a sports fanatic and former player a lot of south Florida teams especially at the black schools they lack competent coaching which brings forth a lot of undisciplined play. They rely more on athletics down here being able to put run and out jump their opponent. And most times they prevail. But notice when they go up against a school with solid coaching a few athletes they lose.