Yusuf Zuck is the one who can defy nature and laws, because only in the Creation Realm is there a Heavenly Domain, and only then can the Heavenly Domain be granted to others to use. But he cultivated the Heavenly Domain long ago, which surpasses the natural order.
Furthermore, he can perform Ancestral Monster Cultivation, which is also an act against heaven, surpassing the natural order.
Additionally, he can create things out of thin air, using the Dew of Fate he can even create living beings, so he is indeed beyond the natural realm!
Combining all these points, he possesses Divine Skills that are completely unmatched to himself. Ayden Acme saying he's unfathomable is reasonable, because he truly is.
The Black Bull Great Demon might not be much, but his interpretation of the Heavenly Dao and the Creation Realm is unique. Perhaps he is more open-minded, which is why he understands the Heavenly Dao better.
