Some people thought that playing the games is only involving the skill. For some reasons, we should realized that to win the games, we might need something else than just the games skill.

We might need some luck.  For some people, there are some strong correlation between the wins and lucky. Some winner might be not the best players but somehow they were lucky enough to win the games.

They were lucky enough to win the games even though they were not good enough. In normal situation, they might not win, but somehow, the condition could be different when we talked about luck.