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
An anthology of bite-sized Kirby adventures with deep copy abilities and co-op helpers.

Execution · Practiced Mastery
Familiar SM64 routing and movement re-tested with a gun in hand.
Kirby Super Star leans Execution (Practiced Mastery); Super Mario 64 FPS 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.
Kirby Super Star
Helper juggling and The Arena demand competence
Super Mario 64 FPS
Platform movement plus aiming carries every star
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby Super Star
Pattern-based bosses throughout
Super Mario 64 FPS
Recreated SM64 enemies follow original scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby Super Star
Treasure locations in Great Cave are fixed
Super Mario 64 FPS
Levels are known quantities from the source game
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby Super Star
Ability matchups and boss patterns reward learning
Super Mario 64 FPS
Star routing and movement tech are well-mapped territory
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.