Soup Brain.

It is not that the Origin gods can't kill that dragon. They can surely do it but they do it with concepts which Soverick doesn't have. They use their concepts to destroy the concepts that make up their targets. But Soverick did what they can do without having concepts. If that isn't impressive enough, it gets better because they know what Soverick did but they don't know how he did it. 

Even they don't know how he did it. If they knew, then they wouldn't need concepts. They had to absorb Origin essence to make them exist that way but Soverick did not and he is a king of law. Either way, he did it, and both sides are very impressed with it.

The administrators of both sides are also impressed with it. 

The sage nodded, "Satisfactory performance. It was expected."

The sage is very impressed with how Soverick handled the dragon but he expected it so it did not come as a shock to him.