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
Moderate platforming execution through inventive but fixed mental levels.

Execution · Pure Mechanics
Faster, harder Wolfenstein blending pulp story with brutal shootouts.
Psychonauts leans Execution (Practiced Mastery); Wolfenstein II: The New Colossus leans Execution (Pure Mechanics).
Wolfenstein II: The New Colossus leans a little harder on execution, though the gap is small.
Psychonauts
Platforming and psychic combat need moderate precision
Wolfenstein II: The New Colossus
Aggressive dual-wield combat punishes sloppy aim.
Wolfenstein II: The New Colossus leans a little harder on reads, though the gap is small.
Psychonauts
Mental-world enemies follow fixed behaviours
Wolfenstein II: The New Colossus
Enemies scripted in arena waves.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Psychonauts
Level layouts are fixed and quickly known
Wolfenstein II: The New Colossus
Minimal randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Psychonauts
Collectible routing and power upgrades add light planning
Wolfenstein II: The New Colossus
Weapon upgrades and contraptions modest.
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.