Team 5 on 5 tournament

I just watched I Got Next, and gootecks mentioned during the East vs West barfight, a 5 on 5 “evo style” bracket.

He explained it a little too briefly, and I was wondering exactly how it works. During the documentary, it seemed like east won all the matches, but later on, Joe says he lost 1. I’m a little confused as to how the bracket is designed.

Any help would be appreciated. Thanks!