head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Practiced Mastery
Time-manipulation puzzles meet the series' signature weapon-upgrade gunplay.

Optimization · Practiced Mastery
A squad-based Star Wars shooter where commanding your clone team wins battles.
Ratchet & Clank: A Crack in Time leans Optimization (Practiced Mastery); Star Wars: Republic Commando 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.
Ratchet & Clank: A Crack in Time
Hoverboot movement, aiming, and time-puzzle dexterity.
Star Wars: Republic Commando
Solid gunplay but squad does much lifting
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Ratchet & Clank: A Crack in Time
Entirely scripted single-player content.
Star Wars: Republic Commando
Droid AI follows fixed behaviours
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Ratchet & Clank: A Crack in Time
First-pass unknowns in puzzles and arenas.
Star Wars: Republic Commando
Encounters are scripted and repeatable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Ratchet & Clank: A Crack in Time
Clank's time puzzles and weapon economy are solvable systems.
Star Wars: Republic Commando
Squad positioning and order timing decide fights
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.