By the sword logic that governs his world. We've already killed Atheon, Crota, and Skolas. Then we go into the raid and kill the Warpriest, Golgoroth, and the twin Deathsingers. We've rooted ourselves into his world as formidable forces. Also, the fact that the little light you follow around is (probably) Toland shows that you receive some outside help in getting the relic

That actually clears up a lot,so does that mean that after we kill oryx in his world we are like gods?

We would be, if we had taken his place as Taken Kings and Queens. But we didn't. We let the Blighted Light escape, we left the biggest power vacuum in the galaxy. Even still, we are now powerful in the Hive ways