Did Black Cleaver always shred Armor as a combination of base And bonus Armor?
What I mean by that:
If a target has 100 base Armor and 100 bonus Armor, Black Cleaver's shred works in a way to reduce it to 70 base + 70 bonus Armor, total 140 Armor (70% of 200).
I always thought that Cleaver's shred worked to substract from bonus Armor, meaning that it reduced the example target to 140 Armor, 40 of which is bonus.
I mean, the way it actually works makes totally sense from a perspective of logic. This way, it does actually synergize with bonus Armor penetration, instead of a harshly mitigating that effect's impact.
For illustration of that point: First case target has 70 base Armor and 38.5 bonus Armor after LW, total 108.5. Second case target would have 100 base Armor and 22 bonus Armor, for a total of 122. Notice the difference?