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
A third-person action platformer where you blast scripted alien hordes while leveling an arsenal of gadgets.

Optimization · Practiced Mastery
Routing guard patrols and executing clean stealth kills through fixed missions.
Ratchet & Clank: Into the Nexus leans Execution (Practiced Mastery); Tenchu Z leans Optimization (Practiced Mastery).
Ratchet & Clank: Into the Nexus leans a little harder on execution, though the gap is small.
Ratchet & Clank: Into the Nexus
Aiming, strafing, and platforming under fire carry combat
Tenchu Z
Stealth-kill timing and movement control matter but forgive
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Ratchet & Clank: Into the Nexus
Scripted enemy waves; no adaptive opponent
Tenchu Z
Guard patrols are scripted, mappable routes
Tenchu Z leans a little harder on variance, though the gap is small.
Ratchet & Clank: Into the Nexus
Fixed level layouts, minimal hidden information
Tenchu Z
Patrol routes are unknown only on first attempts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Ratchet & Clank: Into the Nexus
Weapon upgrade paths, bolt economy, gold bolt routing
Tenchu Z
Routing each mission for undetected kills is the real game
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.