Finland (2001–2021) against Spain (2001–2026)
Two possible answers depending on the criterion. By title count, Fernando Alonso wins (2 against 1). By consistency, it's Kimi Räikkönen who takes the edge, with 31% of the maximum possible points per season on average against 29%. The picture isn't entirely one-sided though: Kimi Räikkönen shows a better podium rate (29.4% against 24.1%) and pole rate (5.4% against 5.2%), while Fernando Alonso keeps the edge in win rate (7.3% against 6.0%) and reliability (20.0% against 20.6% in DNFs). Same team, same equipment: 2014. Race by race, Fernando Alonso came out on top 16 times against 3.