Duff is among the Age of Empires II players representing France. The match count for Duff in Age of Empires II stands at 18. Most of Duff's games take place on the unranked ladder.

Duff has never played a ranked match in Age of Empires II. Duff shows a preference for Britons, picking it 38.9% of the time. The pocket position is where Duff thrives, winning 100.0% of 1 games.