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

Optimization · Pure Optimization
A physics sandbox testing track design to guide a sledder along drawn lines.

Optimization · Pure Optimization
Sitcom puzzle game about rigging perfect prank chains around a fixed routine.
Line Rider 2: Unbound leans Optimization (Pure Optimization); Neighbours from Hell 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.
Line Rider 2: Unbound
Drawing tracks has no twitch dimension
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.
Line Rider 2: Unbound
Solo physics sandbox with no opponent
Neighbours from Hell
The neighbour loops a fixed routine
Neighbours from Hell leans a little harder on variance, though the gap is small.
Line Rider 2: Unbound
Deterministic physics, nothing random
Neighbours from Hell
Routine unknown on first attempt, then converges
Line Rider 2: Unbound leans a little harder on optimization, though the gap is small.
Line Rider 2: Unbound
Designing tracks that produce desired sled physics is the puzzle
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.