In his domain, he had three major authorities, corresponding to his lifebound divine powers: Divine Power, Life Extension, and Paralysis.
Normally, in a battle between the Four-Merit and Three-Merit realm, the domains of both sides should be such that the Four-Merit surrounds the Three-Merit, while the latter could only support and defend, ensuring it wouldn't be suppressed by the domain of the former.
However, in the case of Mr. Sun and the Great Heavenly Centipede, Mr. Sun's domain area was much larger! Moreover, with the assistance of the Great Formation, it had turned the tables so that the Great Heavenly Centipede was the one struggling to maintain its domain and not be crushed!
Furthermore, the Great Heavenly Centipede had a clear perception that the Guardians' domain authority was higher than its own. Its three authorities were completely at a disadvantage against the Guardians' two major authorities, reflecting a difference in their positions within the Heavenly Track.