User blog comment:TDFanatic52/How to be a Finalist in Total Drama/@comment-11883116-20171202191954/@comment-24150444-20171202193511

I think he meant that Heather had the tiebreaking vote as Gwen had Cody while Courtney had Sierra, meaning it was up to Heather to break that tie, which put her in a very strong position.

Also, Heather could have easily convinced Cody to vote out Sierra again in the final 3. Even if they were becoming sort of friendly, he was still pretty freaked out by her.