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
First-person physics platformer about leaping across a convoy of crashing trucks.

Execution · Practiced Mastery
A retro Sonic revival celebrating classic-era momentum design.
Clustertruck leans Execution (Pure Mechanics); Sonic Mania leans Execution (Practiced Mastery).
Clustertruck leans a little harder on execution, though the gap is small.
Clustertruck
Frame-tight jumps across moving trucks
Sonic Mania
High-speed reaction platforming
Sonic Mania leans a little harder on reads, though the gap is small.
Clustertruck
No opponent
Sonic Mania
No human opponent
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
Sonic Mania
Mostly deterministic with hidden routes
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
Sonic Mania
Route knowledge dominates speedruns
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.