Hive, two reasons one because they have interacted with the deep aka the darkness directly and made a pact with the disciples of the deep they weren't just controlled. Two oryx and his sisters one we know the taken king is dead yes but his sisters which were at sometimes known to be more cunning then he was are both still alive. And two if any race managed to bring the hive to their knees which the vex cannot replicate their thrones worlds perfectly so it would be doubt IF they could cripple the hive. I thing they would have to answer to the worms, the worms are their gods. I mean we haven't even met the real hive bosses yet. Black garden psh wait until they feel the wrath of the worms of the fundament