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
A rally sim testing relentless car control plus stage memorisation and setup.
Clustertruck leans Execution (Pure Mechanics); WRC 10 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
WRC 10
Rally car control on loose surfaces is relentless precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Clustertruck
No opponent
WRC 10
Racing the clock, not a mind
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
WRC 10
Weather and surface conditions add modest unpredictability
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
WRC 10
Setup tuning and memorising stage notes reward study
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.