I don’t think they have.
But i think their statements are wrong.
If symmetra deals damage in ticks, then armor currently reduces either 50% or 3 damage per tick.
That is fact.
If she deals 180 as they previously stated, or 195 as currently stated, doesn’t matter.
If her damage is dealt in 20 ticks a second, then armor affects 20 attacks.
If the damage is less than 10 armor will remove 50% of it.
If the damage is more than 10, armor will remove 3 damage from it.
Either symmetra doesn’t deal damage in 20 ticks.
Or she deals more than 12 damage per tick.
Or she deals more damage after this change.
There is no possibility all of them are right.