I'm no expert on the style, but the place by me that claims to make "authentic" nashville hot chicken uses a spice paste on the chicken that is thicker and richer in flavor than your typical buffalo sauce, which tends to be more runny and vinegary/sour.
I
LOVE Nashville hot chicken
and Buffalo wings!
I also
LOVE Cincy chili
and Detroit-style pizza!
I also
LOVE food!!!!!!!!!