.... you hardly find NPCs firing sidewinders or similar at you. - its not a big deal as such, - but a group of 4 assassins firing 4 sidewinders while chainfiring their other 6 guns on advance is a "slight" little different to a group of 4 BHG hammerheads firing their 4 reavers and 2 buckshots.
i guess we can be happy its not cannonballs on the common NPCs though.