I used to live in Nashville--for 31 years, in fact--but I now reside in Murfreesboro; and I believe that The Slick Pig, in Murfreesboro, has better barbecue than any place in Nashville.
Of course, this is just an opinion--and, as such, it is entirely subjective--but so is the view listed in the OP.
Nope nope nope. The best barbecue in the known universe is in Townsend TN, The Little River Barbecue.
Now, when my father in law owned the Chuck Wagon on Mcduff in Jacksonville FL I would have had to say it was (or spend the next two weeks eating McDonald's)