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

Execution · Practiced Mastery
Black-and-white Wii brawler chasing stylish kills for points.

Execution · Practiced Mastery
Moderate platforming execution through inventive but fixed mental levels.
MadWorld leans Execution (Practiced Mastery); Psychonauts leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
MadWorld
Motion-combo brawling and boss QTE timing
Psychonauts
Platforming and psychic combat need moderate precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
MadWorld
Enemies are scripted fodder
Psychonauts
Mental-world enemies follow fixed behaviours
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
MadWorld
Arenas are fixed
Psychonauts
Level layouts are fixed and quickly known
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
MadWorld
Score multipliers reward creative kill routing
Psychonauts
Collectible routing and power upgrades add light planning
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.