>>5719255Also I think the quality and enchantments of the armor and weapons could be taken into account too.
There is probably a difference between just any normal steel breastplate made by a normal blacksmith, and a Bretonnian artificer wrought golden plate blessed by the Lady, or dwarfen runic heavy iron, or Ikit Klaw's hydraulic power armor, or such.
Conversely, a regular crossbow or longbow or matchlock wouldn't be as powerful as say, those fancy magic bows the High Elves or Wood Elves use, or Warplock Jezzails and Silver Bullet Handgunners with blessed powder backed by an alchemical sorcerer or something.
They did have to develop Kraken Bolts to penetrate Space Marine armor after all.