As Lúcio says: Let’s break it DOWN! Armies: Interstellar dogfights: The taken fleet was able to take on prince uldren and the queen’s fleet while the vader’s imperial fleet can’t defend one exhaust port from about 15-30 rebel ships. Btw I would expect many of them to have hardly any training in flying a starfighter. Oryx:1 Vader:0 Infantry conflict: The taken humiliated the cabal on firebase phobos on the taken king’s opening mission and the cabal are supposedly universally renowned for their military might. The stormtroopers on the other hand have been a meme and joke when talking about tactics and accuracy with their weapons. Oryx:2 Vader:0 Super weapons: Death Star: That’s no moon. The Death Star has destroyed planets with hardly any sort of charge time. It’s like the charge time of fifth shot merciless. Has one major highly exploitable weakness: exhaust port Hive Dreadnaught: Has cleared a massive hole in the rings of Saturn. Decimated awoken fleet within seconds. No major known exploitable weaknesses except one hell of a lot of cabal explosives Chances are that the Death Star could not destroy the dreadnaught with its death ray due to hive space magic and the arcana of the deep Oryx:3 Vader:0 Oryx vs. Vader Hand-to-hand (sword to lightsaber?) combat: Oryx is huge in comparison to Vader who is about half a foot taller than luke skywalker and the sheer amount of force he could apply on him with a swing of willbreaker would simply crush Vader like an ant. Not to mention how the force would help very little considering yoda (one of the most powerful force-sensitives in Star Wars history(emphasis on one of)) has trouble moving some stone pillars in his encounter with count dooku in the attack of the clones movie (episode II). Oryx:4 Vader:0 Also oryx takes all of the stormtroopers he captures adding to his own strength as well as detracting from Vader’s. Also on the off chance Vader does somehow kill oryx he would just take himself and retreat to the ascendant realm like in the last mission of taken king (regicide) and Vader would have no chance of killing him there because he would be completely unable to enter the ascendant realm Oryx’s ability to take gives him a point and the whole unkillable thing adds another 2000. So I think it’s safe to say oryx would have a steady win TLDR: oryx wins

Seriously? That’s like asking who would win between a Megladon and a minnow. Oryx has subjugated thousands of worlds, makes the dark side of the force look like its a child’s temper tantrum, and let’s not forget the ability to take. Vader would lose. If not from oryx himself, then from maybe half of the taken lieutenants would turn him into cream. The Warpriest, Golgoroth, Crota, Keksis, Sylok, you name it, Vader is mince meat