"To win the competition" means to be the best or achieve the highest score or performance among all the participants in a contest or event. Full definition
Knowing which mutations commonly win competitions in immune - compromised patients may give a preview of winners in the global flu fight. (sciencenews.org)
If there isn't any intention of winning a competition why compete? (justarsenal.com)
Whatever the score I'm sure one of you could be even happier by winning this competition. (justarsenal.com)