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
Quiet side-scrolling journey piloting a land-ship across a dried-out sea.

Optimization · Pure Optimization
A prank-based puzzle game about sequencing traps against a scripted neighbor.
FAR: Lone Sails leans Optimization (Pure Optimization); Neighbours from Hell 2: On Vacation 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.
FAR: Lone Sails
Light platforming and timely lever pulls
Neighbours from Hell 2: On Vacation
light timing on trap execution
Neighbours from Hell 2: On Vacation leans a little harder on reads, though the gap is small.
FAR: Lone Sails
No opponent of any kind
Neighbours from Hell 2: On Vacation
neighbor follows scripted routine, not adaptive
Neighbours from Hell 2: On Vacation leans a little harder on variance, though the gap is small.
FAR: Lone Sails
Mostly fixed obstacles, minor unknowns first run
Neighbours from Hell 2: On Vacation
some randomness in reaction timing
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
FAR: Lone Sails
Fuel management and ship-routine efficiency are the game
Neighbours from Hell 2: On Vacation
puzzle-solving trap sequences per room
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.