User blog comment:TotalDramaAndrew/Ranking on the Male Finalists in Total Drama/@comment-29817311-20140503215803/@comment-24201961-20140505004144

^I read on a previous talk page archive for "World Tour" that Sierra and Alejandro's comeuppances were for replacing Beth and Justin, respectively.

Plus, I believe Beth and Sierra are similar, since they have a thing towards Cody.