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
A relaxed collect-athon testing character-ability matching far more than any skill ceiling.

Execution · Practiced Mastery
A dark puzzle-platformer about a tiny girl in a grotesque world.
LEGO Batman 2: DC Super Heroes leans Optimization (Practiced Mastery); Little Nightmares leans Execution (Practiced Mastery).
Little Nightmares leans a little harder on execution, though the gap is small.
LEGO Batman 2: DC Super Heroes
Button-mashing combat designed for children's hands
Little Nightmares
Stealth platforming demands timing.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
LEGO Batman 2: DC Super Heroes
Enemies are harmless scripted waves
Little Nightmares
Enemies are scripted.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
LEGO Batman 2: DC Super Heroes
Stud and minikit locations are fixed once known
Little Nightmares
Minimal randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
LEGO Batman 2: DC Super Heroes
Matching character abilities to gated collectibles
Little Nightmares
Routes have fixed solutions.
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.