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.

Optimization · Practiced Mastery
Trial-and-error memorisation of fixed death sequences, then executing the learned solution precisely.

Optimization · Practiced Mastery
Time-manipulation puzzles meet the series' signature weapon-upgrade gunplay.
Out of This World leans Optimization (Practiced Mastery); Ratchet & Clank: A Crack in Time leans Optimization (Practiced Mastery).
Out of This World leans a little harder on execution, though the gap is small.
Out of This World
Precise jump and laser timing within tight scripted windows
Ratchet & Clank: A Crack in Time
Hoverboot movement, aiming, and time-puzzle dexterity.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Out of This World
Every threat is a fixed script, never adapting
Ratchet & Clank: A Crack in Time
Entirely scripted single-player content.
Out of This World leans a little harder on variance, though the gap is small.
Out of This World
Deaths come from unknown scripted traps until memorised
Ratchet & Clank: A Crack in Time
First-pass unknowns in puzzles and arenas.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Out of This World
The game is solved by mapping each screen's exact sequence
Ratchet & Clank: A Crack in Time
Clank's time puzzles and weapon economy are solvable systems.
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.