He was a shoo-in the moment he entered. The only obstacle to victory would have been another man, reducing his chances to 50/50.
Once there's a tranny on the stage, the people who run the pageants are too cowardly to give the crown to an actual girl.[1] They don't want to be seen as heretics, so they (and the rest of the girls) pretend to go along with it, recite the creeds, do the rituals.
Transgenderism is kind of like transubstantiation: say the magic words, and one substance is transformed into another. Though they're equally fictitious.
[1] Technically they proved that when they let him enter, let alone win.