I think of them as anti-player weapons. There are weapons like the sawed-off shotguns and hunting rifles with short barrels and no scope that do high damage to players but that I never find useful because I'm often fighting crowds or bosses where the long reload time is fatal.
Ludonarrative dissonance is becoming one of my pet peeves, though. Sawed off shottys make sense for someone in the universe in their train of thought, like raiders or Gunners lying in ambush. Gamma guns are stupid even as Children of Atom weapons since most normal humans have no desire to go into CoA irradiated spaces. The only things that do...are immune to radiation.