Going back to basics, Webster defines tactical as:

1 : of or relating to combat tactics : as a (1) : of or occurring at the battlefront <a tactical defense> <a tactical first strike> (2) : using or being weapons or forces employed at the battlefront <tactical missiles> b of an air force : of, relating to, or designed for air attack in close support of friendly ground forces
2 a : of or relating to tactics : as (1) : of or relating to small-scale actions serving a larger purpose (2) : made or carried out with only a limited or immediate end in view b : adroit in planning or maneuvering to accomplish a purpose

But I agree that these days it is mainly a marketing ploy...