In truth, Orcus was very curious about Dyon. Those wings should be angel wings, yet he didn't sense any angel blood within Dyon. To make things more curious, Dyon's soul was far more powerful than it should be. It was borderline nonsensical. Then there was the matter of Dyon's constitution. If one was comparing his Death God Body to Dyon's Titan Diamond Body, it could be said that Dyon was far from the height Orcus reached.
If compared appropriately, Orcus' constitution was refined and elevated such that it was comparable to if Dyon entered the diamond-silk realm. That was an entire four realms higher than Dyon's current level and only a single level below true mastery of the constitution. To put things into perspective, it would be like comparing Dyon's current 100 000 000 jin weight to a 10 000 000 000 000 jin weighted body.