yesterday they debuffed T20 and buffed T21 which results imo bigger damage from T21 and logs say that aswell.
The BiB tells me to not equip T21 4 piece set in favor of T20 4 piece Set Bonus. Also the Text still says that T20 grants 15% haste (now 10%) and T21 10% Damage Increase (is now 15%).
Is this already in the simulated data or the old values? Version Numbers seem to match.