If Zhou Tian really went head‑to‑head with that group of Divine Kings and stubbornly tried to Kill the Light God King and the others, it wasn't impossible. But just like the situation Zhou Tian was worried about, setting aside whether he actually had the Ability at that moment to Kill the Light God King and the others, even if Zhou Tian really managed to pull it off, it's likely that right when he Killed the Light God King and the others, he himself would inevitably be heavily injured by them in turn.
Obviously, once Zhou Tian really got injured, then his current Gains would no longer be enough to make up for his Loss.
