The following compares the current state of Assassination Rogues to Demonology Warlocks using the latest SimulationCraft data for end-game PvE in World of Warcraft The War Within patch 11.0.2.
Comparison
Category
Winner
Assassination Rogue
+4.34%
When simulating boss fight encounters, Assassination Rogues averaged 4.34% more DPS than Demonology Warlocks (+61K DPS).
Assassination Rogue
+21.3%
When simulating AoE DPS, Assassination Rogues averaged 21.3% more DPS than Demonology Warlocks (+202K DPS).
Assassination Rogue
+65.89%
Assassination Rogues have higher spike damage potential, achieving +5.7M more DPS than Demonology Warlocks.
Spike damage is the peak DPS achieved in any given moment and is not sustained DPS.
Assassination Rogue
+0.4%
When upgrading the gear for both specs by +44 ilvl, Assassination Rogue DPS improved the most, +0.4% more than Demonology Warlock. In total, Assassination Rogues DPS increased by 68.03% and Demonology Warlocks by 67.63%.
Demonology Warlock
+4.33%
+ Movement and latency lowered the DPS by 14.44% for Demonology Warlocks.
+ Movement and latency lowered the DPS by 18.77% for Assassination Rogues.
When introducing occasional movement and real-world latency, Demonology Warlocks performed better, as Assassination Rogues suffered a +4.33% 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 Assassination Rogue and Demonology Warlock in the current meta, which can hopefully help you determine which spec to play or group up with.