You've no doubt seen the Mean % Finish stats for regular individual challenges. We carved duels off into its own separate category, because they're just not as competitive as regular challenges. We've also demoted "Hero challenges," such as the opening, one-person reward challenges in Panama - Exile Island and South Pacific, into duel status. By applying the MPF formula to duels, we can get a better gauge of true performance in duels, especially when the rules change from season to season (second place in 3-person duels meant staying alive in S22, elimation in S23, then back to staying alive once again in S27). It's not perfect... third place in a four-person duel scores as 0.50, the same as losing a two-person duel. But we do what we can.

The San Juan del Sur pre-merge RCs were also duels. We've made a 2-duel minimum cutoff for this leaderboard, simply because every winner from that season ended up with a 100% MPF, which puts them all up at the top, despite a single win being far less impressive than Christine's or Matt's long string of do-or-die wins.