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
A boss-rush bullet hell testing dodge execution against learnable scripted patterns.

Execution · Practiced Mastery
A test of 3D movement control with a deep routing layer underneath.
Itta leans Execution (Practiced Mastery); Super Mario 64 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.
Itta
Bullet-hell boss patterns demand precise dodging and aim
Super Mario 64
Perfect analog inputs trivialise precise jumps, dives and wall-kicks
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Itta
Bosses fire scripted patterns, never adapting
Super Mario 64
Solo platformer - no adaptive opponent anywhere
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Itta
Encounters are fixed once seen
Super Mario 64
Star locations and level layouts are fixed once seen
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Itta
Learning each boss's pattern is the path to victory
Super Mario 64
Star routing and movement tech form a deep solvable layer
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.