After the Priest fell, the remaining three persisted for a while, but eventually failed as well.
When Lu Li heard the announcement of Ruling Sword's victory, he wasn't actually that happy. If it weren't for Kitty Likes Meat's great performance, they most likely would have lost this match.
Upon defeating Stellar Union, Ruling Sword had gathered enough points to advance them into the top 100.
Even if they didn't play their next four matches, they would still be promoted, but no guild would choose this option.
The matches were not long, so it didn't make much sense to sacrifice that time to go levelling.
Participating in the competition could train a guild's players, not only in technical skill but actual combat experience. That way, they would now what to do when a problem arose in circumstances that mattered.
Participating in the games was also a good way to make money, as the tickets were a good source of income.