Quote Originally Posted by Ultimatecalibur View Post
That says nothing about Samurai not applying a version of the Storm's Eye/Dancing Edge Slashing resist down debuff as part of its combo attacks.

Part of the reason Nin has better synergy with War/Pld and War/Drk than Drk/Pld is that Dancing Edge is not actually part of the Ninja's optimal dps rotation while Storm's eye is part of the Warrior's. Ninja's would rather use Aeolian Edge than Dancing Edge.

If the Sam naturally applies a slashing debuff with its optimal dps rotation (just like how the Dragoon always applies the piercing debuff with Disembowel due to always wanting to keep Chaos Thrust's DoT up) then War/Pld and War/Drk would not naturally be better than Pld/Drk.
...unless you're a yolo NIN who will hit the boss with it from the front each time.