head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
Committed rally driving where memorised stages meet precise throttle-and-slide control.

Execution · Pure Mechanics
Punishing rally car control at the limit, supported by setup and stage knowledge.
Colin McRae Rally 04 leans Execution (Pure Mechanics); Dirt Rally leans Execution (Pure Mechanics).
Dirt Rally leans a little harder on execution, though the gap is small.
Colin McRae Rally 04
Millisecond car control on loose surfaces is the whole test
Dirt Rally
Unforgiving car control on loose surfaces is the entire test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Colin McRae Rally 04
Solo against the stage clock
Dirt Rally
Solo time trials against the clock, no adaptive rival
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Colin McRae Rally 04
Damage and surface conditions add minor unknowns
Dirt Rally
Weather and surface degradation vary between stages
Dirt Rally leans a little harder on optimization, though the gap is small.
Colin McRae Rally 04
Setup tuning and stage memorisation compound lap time
Dirt Rally
Pacenote interpretation, setup tuning and stage memorisation
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.