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
The 1992 survival-horror pioneer trapping you in a puzzle-filled haunted mansion.

Optimization · Practiced Mastery
An open, maze-like Kirby where four Kirbys explore an interconnected mirror world.
Alone in the Dark leans Optimization (Practiced Mastery); Kirby & The Amazing Mirror 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.
Alone in the Dark
Clunky combat and dodging
Kirby & The Amazing Mirror
Easy combat with floaty movement
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Alone in the Dark
Monsters scripted in place
Kirby & The Amazing Mirror
No adaptive opposition
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Alone in the Dark
Traps surprise exactly once
Kirby & The Amazing Mirror
Maze layout unknown until explored
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Alone in the Dark
Puzzle solutions and item routes are fixed
Kirby & The Amazing Mirror
Navigating the interconnected mirror-world maze for mirror shards
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.