As the first showing of an ace mecha battle, Mu Chaoran's opponent would obviously be a powerful ace mecha master. He had reached the peak level of ace mecha master so he was intending to use this opportunity to advance to imperial mecha operator.
However, this was not the last match so the mecha operator from Caesar didn't expect to meet such a powerful opponent right at the start.
As for Mu Chaoran, he knew from the start that he had to enter the top three so he fought with all his might.
One was unprepared while the other fought to his best. Furthermore, Mu Chaoran's mecha piloting skill was already a level higher than his opponent. If his opponent had prepared beforehand, he might have a chance against Mu Chaoran. Unfortunately, he was caught unprepared. His carelessness gave Mu Chaoran an opportunity to immediately suppress his opponent.