The battle was over, but everyone was left in shock.
From start to finish, everything Klaus did was so shocking that it could not be explained in words. He started by proving he could have ended the battle in under ten minutes when, instead of going for the kill, he used the Time Law to stop time and paint on Rouni's face.
Afterwards, he proved he could go toe-to-toe with a technique created by a Celestial.
While that alone was super shocking, the mind-blowing part came when he took control over the [Beast God Dominion] technique and flawlessly used it to defeat his opponent.
That was the highlight of the battle, and now, everyone was having a hard time coming to terms with everything they had seen.
But while they were in shock, Klaus was happy that the battle was finally over and that he had won. He never knew this silly battle would give him this much exposure and reward.
