For an explanation of the rankings, see
here.
Episode RankingsTeams in finish order1) Tyler & James
2) Duke & Lauren
3) Peter & Sarah
4) Dustin & Kandice
5) Rob & Kimberly
6) Kellie & Jamie
7) Erwin & Godwin
8) Tom & Terry
9) Lyn & Karlyn
10) David & Mary
11) Vipul & Arti
12) Bilal & Sa'eed
Teams ranked by performance throughout the episode1) Duke & Lauren
2) Tyler & James
3) Peter & Sarah
4) Lyn & Karlyn
5) Dustin & Kandice
6) David & Mary
7) Kellie & Jamie
8) Tom & Terry
9) Rob & Kimberly
10) Erwin & Godwin
11) Vipul & Arti
12) Bilal & Sa'eed
Duke & Lauren were ahead Tyler & James as they were ahead of them up until the Meridan Gate, which is enough to keep them ahead in the overall rankings.
The other differences between the finish order and the performance rankings are as a result of the final task where some teams (Lyn & Karlyn, David & Mary, Tom & Terry) lost places, and other teams (Kellie & Jamie, Rob & Kimberly, Erwin & Godwin) made up places. However, the performance in the leg up to that point was enough to keep the teams who lost places there ahead overall.
Roadblock RecordBilal: 1, Sa'eed: 0
David: 0, Mary: 1
Duke: 1, Lauren: 0
Dustin: 0, Kandice: 1
Erwin: 1, Godwin: 0
Kellie: 0, Jamie: 1
Lyn: 0, Karlyn: 1
Peter: 1, Sarah: 0
Rob: 1, Kimberly: 0
Tom: 0, Terry: 1
Tyler: 0, James: 1
Vipul: 1, Arti: 0