France (1980–1993) against Austria (1971–1985)
Alain Prost wins this one without much argument: more titles (4 against 3) and a clearer edge in dominance once scaled against their competition, averaging 41% of the maximum possible points per season against 23% for Niki Lauda. The rest just confirms the gap: Alain Prost also leads Niki Lauda in win rate (25.6% against 14.6%), podium rate (53.3% against 31.6%), pole rate (16.6% against 14.0%), and reliability (29.6% against 46.8% in DNFs). Same team, same equipment: 1984, 1985. Race by race, Alain Prost came out on top 17 times against 8.