head to head
vs
Colin McRae: DirtvsRock n' Roll Racing
Colin McRae: Dirt leans Execution (Pure Mechanics); Rock n' Roll Racing leans Execution (Practiced Mastery).
Colin McRae: DirtRock n' Roll Racing
Axis by axis
Execution8 vs 7
Colin McRae: Dirt leans harder on execution: Car control on loose surfaces is the entire test
Reads1 vs 1
Even - both lean on reads about the same.
Variance2 vs 2
Even - both lean on variance about the same.
Optimization4 vs 5
Rock n' Roll Racing leans harder on optimization: Upgrade purchases and planet-by-planet earnings are plannable.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.