"Participating in a duel sounds nice, but I really don't think there is any opponent here who can contend against me".
Orun was not bragging but simply stating a fact to the Elven queen.
Since becoming an elemental king, he has yet to meet his mtach, a rival to help him measure his strength and has never once being forced to have to go full mode on his opponent.
Orun is not saying that he has achieved his dream of being so strong that he will have nothing to worry about.
No, he never said such a thing because he knows that he is still nowhere near the strength that miss dragon exude out with only her presence.
There is also the Pillars who he met with while he was still an Infernal Goblin race.
Back then, their presence overwhelmed him greatly that he questioned how they achieved their strength.
For the Pillars however, things are very different now because Orun has evolved since their last meeting and have now become an elemental king.