Damage Resistances or Thresholds?

[Halstrom]

So has anyone worked out how the Armor rating works, is it Damage resistance or Damage Threshold and are the resistances just Damage Threshold added or actual Resistances?

 

In Weapons there's also secondary damage is that the Melee damage of a gun?

[Kit Kitten]

Its all damage resistance, Bethesda doesn't seem to like DT. Scroll down to the Fallout 4 section of this page (http://fallout.wikia.com/wiki/Damage_Resistance) for a detailed explanation and formulas of how damage reduction is calculated. 

 

If you are interested in modding DT back into the game, Talkie Toaster has released a DT resource (Damage Threshold) while zilav made a xEdit script to apply DT to armors and creatures in the game (Damage Threshold Patcher). The patcher requires the DT mod.