Both the Heavensfall and the XX-REX missiles represent specific types of military ordnance. Compared to the missiles used by mercs and gangs, the missiles used by the Mech legion possessed a lot of advantages.
They hit harder, their ECM wouldn't be as easy to fool and they accelerated significantly faster as well. Superior development only played a minor role in their performance. The true reason why the Flagrant Vandals feared these missiles was because they incorporated various amounts of exotics.
The use of expensive materials lay at the root of their performance. The Bright Republic generally shied away from such practices, as they considered lacing their missiles with junk exotics or low-grade exotics to be an absolute waste.
