That preview of Edna winning the duel was off because in the shot they showed, the columns did not contain one of every color like I presume it needs to.
Either they are tricking us into thinking Edna wins and have it not be right and then have Ozzy win or tricking us into thinking Edna wins in that moment and then tricks us into thinking Ozzy is close and then it turns out that Edna actually wins.
I prefer the latter.