The following compares the current state of Demonology Warlocks to Feral Druids using the latest SimulationCraft data for end-game PvE in World of Warcraft The War Within patch 11.0.2.
Comparison
Category
Winner
Demonology Warlock
+1.19%
When simulating boss fight encounters, Demonology Warlocks averaged 1.19% more DPS than Feral Druids (+16K DPS).
Feral Druid
+15.79%
When simulating AoE DPS, Feral Druids averaged 15.79% more DPS than Demonology Warlocks (+140K DPS).
Feral Druid
+45.05%
Feral Druids have higher spike damage potential, achieving +2.4M more DPS than Demonology Warlocks.
Spike damage is the peak DPS achieved in any given moment and is not sustained DPS.
Demonology Warlock
+0.83%
When upgrading the gear for both specs by +44 ilvl, Demonology Warlock DPS improved the most, +0.83% more than Feral Druid. In total, Demonology Warlocks DPS increased by 67.63% and Feral Druids by 66.8%.
Feral Druid
+13.34%
+ Movement and latency lowered the DPS by 5.43% for Feral Druids.
+ Movement and latency lowered the DPS by 18.77% for Demonology Warlocks.
When introducing occasional movement and real-world latency, Feral Druids performed better, as Demonology Warlocks suffered a +13.34% 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 Feral Druid in the current meta, which can hopefully help you determine which spec to play or group up with.