I think Heupel is a better X’s and O’s Coach. If the two coaches swapped rosters, what would the results have been? Also have to remember, Kirby walked into a stacked cupboard of talent already. Kirby’s a great motivator and recruiter, Heupel is better at X’s and O’s and scheming. Heupel is probably a more “likeable” player’s coach as well.
A lot of folks probably don’t want to hear this but Kirby is probably more similar to Fulmer. During his prime, Fulmer was a great motivator and recruiter that basically out talented people outside of Florida (talent was more even and we had more talent at times). Fulmer also had good coordinators, especially with Cutcliffe.