Matt and Rob in their own way are really the ONLY two who have played this game.
Rob - all three areas.
Matt - two of the three currently - out play and out last in winning the duels. He's won every single one he's played, and so far I think that's been every duel. He's also lived I think 31 days mostly by himself in this game, or about half the time factoring in time spent with the other contestants. Currently, the past few days with two-three others is the closest he's spent playing it more along the real game.
The ONLY person Rob really should worry about facing is Matt. The others he'll have a decent chance at winning this.