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.

Execution · Practiced Mastery
Moderate platforming execution through inventive but fixed mental levels.

Execution · Pure Mechanics
A lovingly curated Beatles career retrospective playable as a full band with vocal harmonies.
Psychonauts leans Execution (Practiced Mastery); The Beatles: Rock Band leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Psychonauts
Platforming and psychic combat need moderate precision
The Beatles: Rock Band
Gentler charts plus three-part vocal harmonies
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Psychonauts
Mental-world enemies follow fixed behaviours
The Beatles: Rock Band
Nothing adapts
Psychonauts leans a little harder on variance, though the gap is small.
Psychonauts
Level layouts are fixed and quickly known
The Beatles: Rock Band
Fixed charts
Psychonauts leans a little harder on optimization, though the gap is small.
Psychonauts
Collectible routing and power upgrades add light planning
The Beatles: Rock Band
Harmony arrangement and overdrive timing
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.