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 · Practiced Mastery
Careful climbing execution and route planning where a single mistimed grab undoes everything.

Execution · Pure Mechanics
A grappling-hook bullet-hell metroidvania testing precise movement and dodging.
Peak leans Execution (Practiced Mastery); Rusted Moss leans Execution (Pure Mechanics).
Rusted Moss leans a little harder on execution, though the gap is small.
Peak
Stamina-managed grip timing - one slipped input drops the whole climb
Rusted Moss
Grappling-hook movement and bullet-dodging are the lead
Rusted Moss leans a little harder on reads, though the gap is small.
Peak
Co-op against a mountain, no adaptive opponent
Rusted Moss
Bosses are scripted patterns, not adapting to you
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Peak
Daily map rotation and item spawns shuffle each ascent
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.
Peak
Routing the wall and rationing items decides summit attempts
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.