Zhou Tian never had the idea of perishing together with his opponent, so if he truly had no confidence at all, he would never have stayed to fight. And since Zhou Tian made that move at the time, it naturally represented that he was confident he could defeat those deities.
At the very least, Zhou Tian was confident he could guarantee his own safety, otherwise, with Zhou Tian's personality, even if he had the ability to battle his opponent, he wouldn't have stopped to engage in a hard fight with those deities.
So, where did Zhou Tian's confidence come from?
The Divine Sword in his hand!
Although he didn't know exactly what grade of weapon his Divine Sword was, based on past experiences, Zhou Tian was confident that it was at least of True God level. And, speaking of physical attacks, the Divine Sword felt like it even surpassed the performance that a True God level weapon should have.
