Undoubtedly, given the strength of Zhou Tian's subordinates, the Heavenly Gods, even when facing those road-blocking enemies in the same realm, they would surely gain the upper hand.
At the end of the day, while strength is greatly related to cultivation level, they aren't exactly equivalent. When cultivation levels are not vastly different, other factors influencing strength become crucial. Undoubtedly, Zhou Tian's Heavenly Gods might not have more resources than the enemies, but in other aspects, they definitely have 100% superiority.
Deities practice rules. Although those with favorable conditions can receive some auxiliary help, the actual cultivation still relies on oneself. Thus, the advantage in cultivation techniques for those born well in the Lower Realm doesn't exist in the Divine Realm. Combat still depends on their respective tactics.