DA-Dark passenger, DA - Dark dance, 5s between them but I throw up blood price and I'll already be building back up for my next DA.

On the flip...at the start of a battle I can pop infuriate as a warrior to get Unchained/Steel Cyclone/Fell Cleave/ Unchained/ Decimate immediately. Granted all my combos build up my resource, while Drk's enmity combo does not replenish mana, however infuriate also has a 50% longer CD then Blood Price.

Drk has more gradual expenditure and build up. War can burst due to infuriate/berserk/raw intuition/Vengeance to get our resource up faster. If theres any actual large difference its that Drks DA expenditure isn't really as potent defensively as Inner Beast except when talking about a Dark Mind on a magic dmg specific situation.