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

Optimization · Pure Optimization
A prank-based puzzle game about sequencing traps against a scripted neighbor.

Optimization · Pure Optimization
A management game about ferrying spirits to the afterlife.
Neighbours from Hell 2: On Vacation leans Optimization (Pure Optimization); Spiritfarer leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Neighbours from Hell 2: On Vacation
light timing on trap execution
Spiritfarer
Platforming is light and forgiving.
Neighbours from Hell 2: On Vacation leans a little harder on reads, though the gap is small.
Neighbours from Hell 2: On Vacation
neighbor follows scripted routine, not adaptive
Spiritfarer
Spirits follow scripted arcs.
Neighbours from Hell 2: On Vacation leans a little harder on variance, though the gap is small.
Neighbours from Hell 2: On Vacation
some randomness in reaction timing
Spiritfarer
Minor resource RNG.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Neighbours from Hell 2: On Vacation
puzzle-solving trap sequences per room
Spiritfarer
Boat layout and crafting loops reward planning.
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.