Alejandro and Cameron share many similarities pertaining to the competition:
They have won a season.
Although they won a season, they did not win in the United States.
In the season they won in, they won solo-immunity challenges
Alejandro in African Lying Society
Cameron in Up, Up, and Away in My Pitiful Balloon, and Eat, Puke, and Be Wary.
In the season that they won in, they thought they were going to be eliminated, but something happened to make them safe.
In Awwww, Drumheller, Alejandro was spared from elimination when Sierra blew up the Jumbo Jet. Chris eliminated Sierra because of that.
Although Cameron thought he was going home in The Enchanted Franken-Forest, he was spared when Lightning picked Zoey to leave over him. This was because Lightning wanted to crush Cameron in the finale.
Both are the only contestants to not be eliminated, as of yet.
Both of them have yet to return to the show at some point, as Owen did in Total Drama Action, and Duncan did in Total Drama World Tour.