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

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

Execution · Pure Mechanics
A grappling-hook bullet-hell metroidvania testing precise movement and dodging.
Clustertruck leans Execution (Pure Mechanics); Rusted Moss 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
Rusted Moss
Grappling-hook movement and bullet-dodging are the lead
Rusted Moss leans a little harder on reads, though the gap is small.
Clustertruck
No opponent
Rusted Moss
Bosses are scripted patterns, not adapting to you
Rusted Moss leans a little harder on variance, though the gap is small.
Clustertruck
Physics chaos makes truck piles unpredictable
Rusted Moss
Bullet patterns are deterministic once learned
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
Rusted Moss
Upgrade routing and metroidvania traversal reward planning
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.