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

Execution · Pure Mechanics
Punishing rally car control at the limit, supported by setup and stage knowledge.

Execution · Pure Mechanics
A bullet-hell shmup testing reflex dodging of scripted enemy patterns.
Dirt Rally leans Execution (Pure Mechanics); Raiden IV OverKill leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt Rally
Unforgiving car control on loose surfaces is the entire test
Raiden IV OverKill
Dodging dense bullet patterns demands precise reflexes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt Rally
Solo time trials against the clock, no adaptive rival
Raiden IV OverKill
Enemies fire fixed scripted patterns, not adapting
Raiden IV OverKill leans a little harder on variance, though the gap is small.
Dirt Rally
Weather and surface degradation vary between stages
Raiden IV OverKill
Some spawn and item randomness, mostly mappable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt Rally
Pacenote interpretation, setup tuning and stage memorisation
Raiden IV OverKill
Memorizing patterns and scoring routes maximizes runs
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.