head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
First-person physics platformer about leaping across a convoy of crashing trucks.

Execution · Pure Mechanics
Committed rally driving where memorised stages meet precise throttle-and-slide control.
Clustertruck leans Execution (Pure Mechanics); Colin McRae Rally 04 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.
Clustertruck
Frame-tight jumps across moving trucks
Colin McRae Rally 04
Millisecond car control on loose surfaces is the whole test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Clustertruck
No opponent
Colin McRae Rally 04
Solo against the stage clock
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Clustertruck
Physics chaos makes truck piles unpredictable
Colin McRae Rally 04
Damage and surface conditions add minor unknowns
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Clustertruck
Route lines and ability use for speedruns
Colin McRae Rally 04
Setup tuning and stage memorisation compound lap time
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.