Sweeping Strikes not adjusting to armor

Current behavior: Sweeping strikes deals the same damage to the second target as it did to the first target even if the second target has a lot more or less armor.

Expected behavior: Sweeping strikes should ignore dodge/parry etc as it does here on the second target but should be affected by armor, if you hit a mage with 20% armor with the first strike the hpally next to him with 70% armor should take a lot less damage and vice versa.

Supporting evidence/data: https://youtu.be/YBI67viemJY?t=1227 The rogue next to the shaman takes more damage from the sweeping strikes hits than the shaman does from the initial hits.