It seems a little pompous on my part to say so, yes, but Jack Daniel's is not bourbon. We should protest calling it so based on the fact that it is a Tennessee whiskey.
They are two different entities, Kentucky bourbon and Tennessee whiskey.
As a bartender I cringe when I see Jack Daniel's listed under a Bourbon menu. Again, I know it sounds a little odd to be annoyed by that, but you wouldn't call Bushmills a scotch, would you?
I prefer George Dickel No. 12 (Tennessee) anyway...