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

Optimization · Practiced Mastery
A deathless fabric-craft platformer where yarn Kirby unzips a gorgeous textile world.

Optimization · Practiced Mastery
A gag-driven platformer testing little beyond collectible patience.
Kirby's Epic Yarn leans Optimization (Practiced Mastery); The Simpsons Game leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Epic Yarn
Deathless design removes nearly all pressure
The Simpsons Game
Simple platforming and character-power timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Epic Yarn
No opposition worth predicting
The Simpsons Game
Parody enemies are jokes on rails
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Epic Yarn
Collectibles sit in fixed spots
The Simpsons Game
Levels are fixed gag sequences
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Epic Yarn
Bead-collection routing for perfectionists
The Simpsons Game
Character-ability puzzles and collectibles are lightly solvable
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.