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 · Pure Optimization
Noir stealth puzzler about rewiring buildings so guards defeat themselves.

Optimization · Pure Optimization
Sitcom puzzle game about rigging perfect prank chains around a fixed routine.
Gunpoint leans Optimization (Pure Optimization); Neighbours from Hell leans Optimization (Pure Optimization).
Neighbours from Hell leans a little harder on execution, though the gap is small.
Gunpoint
Jump timing matters occasionally, lightly
Neighbours from Hell
Timing pranks between patrol windows
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gunpoint
Guards patrol on fixed scripts
Neighbours from Hell
The neighbour loops a fixed routine
Neighbours from Hell leans a little harder on variance, though the gap is small.
Gunpoint
Levels fully visible and deterministic
Neighbours from Hell
Routine unknown on first attempt, then converges
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Gunpoint
Crosslink rewiring puzzles have clean optimal solutions
Neighbours from Hell
Sequencing pranks for maximum combo rating
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.