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

Optimization · Practiced Mastery
Acrobatic puzzle-platformer where rewinding time turns every fatal mistake into a do-over.

Optimization · Practiced Mastery
Time-manipulation puzzles meet the series' signature weapon-upgrade gunplay.
Prince of Persia: The Sands of Time leans Optimization (Practiced Mastery); Ratchet & Clank: A Crack in Time leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Prince of Persia: The Sands of Time
Acrobatic platforming chains need timing; rewind softens failure
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.
Prince of Persia: The Sands of Time
Sand creatures attack on fixed cues
Ratchet & Clank: A Crack in Time
Entirely scripted single-player content.
Ratchet & Clank: A Crack in Time leans a little harder on variance, though the gap is small.
Prince of Persia: The Sands of Time
Rewind power removes most consequence of surprise
Ratchet & Clank: A Crack in Time
First-pass unknowns in puzzles and arenas.
Ratchet & Clank: A Crack in Time leans a little harder on optimization, though the gap is small.
Prince of Persia: The Sands of Time
Route reading and dagger resource management solve each room
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.