head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Practiced Mastery
An open, maze-like Kirby where four Kirbys explore an interconnected mirror world.

Optimization · Pure Optimization
Coordinating three characters through fixed object-logic puzzles.
Kirby & The Amazing Mirror leans Optimization (Practiced Mastery); The Cave leans Optimization (Pure Optimization).
Kirby & The Amazing Mirror leans a little harder on execution, though the gap is small.
Kirby & The Amazing Mirror
Easy combat with floaty movement
The Cave
Undemanding platforming with no timing pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby & The Amazing Mirror
No adaptive opposition
The Cave
No adversary - a narrating cave is not a mind
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby & The Amazing Mirror
Maze layout unknown until explored
The Cave
Each character's section is unknown on first descent
The Cave leans a little harder on optimization, though the gap is small.
Kirby & The Amazing Mirror
Navigating the interconnected mirror-world maze for mirror shards
The Cave
Three-character object-shuffling puzzles are the whole game
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.