France (1980–1993) against Brazil (1978–1991)
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 24% for Nelson Piquet. The rest just confirms the gap: Alain Prost also leads Nelson Piquet in win rate (25.6% against 11.3%), podium rate (53.3% against 29.6%), pole rate (16.6% against 11.8%), and reliability (29.6% against 41.4% in DNFs). The two never raced for the same team, so never went head-to-head in identical machinery. The full interactive comparison (link below) remains the fairest way to bring them together despite the era gap.