When Billy and the others reached the Coliseum, he noticed that only fighters that looked really strong were there. However, they not only looked strong, but their statuses also confirmed that… It was kind of insane, but all of them were above the level one hundred. That state must have some crazy dungeons… or their training was really harsh from an early age. Billy couldn't tell since they really looked strong and experienced.
In any case, it didn't take long for Billy's turn to come. When he entered the ring, he knew that Marie was serious about that… While he watched her fights, she ended hers too quickly, and she never showed a single style or pattern. It seemed that she was good at finding the opponent's weaknesses in their fighting style and using those against them. Billy didn't like to fight people like him who could react in many ways. While both of them were skilled, Billy relied on magic too much, so it was safe to say that Marie was more skilled.