This page is maintained to show how Arms Warriors and Frost Death Knights compare in PvE end-game at level 80 — and was last updated for patch 11.0.7 of the The War Within expansion.
Which Spec Maximizes Your Warrior's DPS?
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Comparing DPS (Arms Warrior vs. Frost Death Knight)
Anytime the game updates, we run simulations using BiS profiles and SimulationCraft to analyze the current meta of all specs in WoW. Below shows which spec had the highest DPS for each category. To view more information in a category, click the Details button.
Performance ComparisonPatch 11.0.7
Frost Death Knight+2.79% DPS
When simulating for maximum theoretical single-target DPS, Frost Death Knights averaged 2.79% more DPS than Arms Warriors (+45K DPS).
Frost Death Knight+26.58% DPS
When simulating for light AoE DPS potential, with small waves of adds, Frost Death Knights averaged 26.58% more DPS than Arms Warriors (+712K DPS).
Arms Warrior+1.8% DPS
When upgrading the gear for both specs by +44 ilvl, Arms Warrior DPS improved the most, +1.8% more than Frost Death Knight. In total, Arms Warriors DPS increased by 67.07% and Frost Death Knights by 65.27%.
This category evaluates the burst DPS potential of each spec by simulating a short encounter with full raid buffs and bloodlust.
This category evaluates the solo DPS potential of each spec by simulating a typical solo delve encounter with no raid buffs.
This category evaluates the pure AoE DPS potential of each spec by simulating both specs to fight intense groups of adds, with nearly 16 adds at any given moment.
This category evaluates the performance of each spec when introducing occasional movement and stuns during boss encounters.
This category evaluates the latency tolerance of each spec by simulating both specs with moderate-to-high latency. This can indicate which spec performs better when facing high latency, whether due to far server/realm location or limited access to quality internet.
This category evaluates the skill level required to play each spec by simulating both specs with greatly reduced player skill. This can indicate which spec is more forgiving of mistakes or has a simpler rotation.
The comparisons above highlight some of the key differences between Arms Warrior and Frost Death Knight in the current meta, which can hopefully help you determine which spec to play or group up with.
Arms Warriorvs Frost Death Knight
Frost Death Knight+2.79% DPS 
Arms Warrior+1.8% DPS