The following compares the current state of Demonology Warlocks to Subtlety Rogues using the latest SimulationCraft data for end-game PvE in World of Warcraft The War Within patch 11.0.2.
Comparison
Category
Winner
Subtlety Rogue
+8.47%
When simulating boss fight encounters, Subtlety Rogues averaged 8.47% more DPS than Demonology Warlocks (+124K DPS).
Subtlety Rogue
+27.79%
When simulating AoE DPS, Subtlety Rogues averaged 27.79% more DPS than Demonology Warlocks (+287K DPS).
Subtlety Rogue
+62.21%
Subtlety Rogues have higher spike damage potential, achieving +4.9M more DPS than Demonology Warlocks.
Spike damage is the peak DPS achieved in any given moment and is not sustained DPS.
Subtlety Rogue
+2.82%
When upgrading the gear for both specs by +44 ilvl, Subtlety Rogue DPS improved the most, +2.82% more than Demonology Warlock. In total, Subtlety Rogues DPS increased by 70.45% and Demonology Warlocks by 67.63%.
Subtlety Rogue
+3.96%
+ Movement and latency lowered the DPS by 18.77% for Subtlety Rogues.
+ Movement and latency lowered the DPS by 22.73% for Demonology Warlocks.
When introducing occasional movement and real-world latency, Subtlety Rogues performed better, as Demonology Warlocks suffered a +3.96% DPS loss.
Demonology Warlock
When evaluating abilities used during boss encounters, Demonology Warlocks had fewer damaging abilities in total, indicating a potentially less complex rotation.
The comparisons above highlight some of the key differences between Demonology Warlock and Subtlety Rogue in the current meta, which can hopefully help you determine which spec to play or group up with.