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
Sitcom puzzle game about rigging perfect prank chains around a fixed routine.

Optimization · Pure Optimization
The co-op sequel where two players engineer overlapping trap gauntlets against orc waves.
Neighbours from Hell leans Optimization (Pure Optimization); Orcs Must Die! 2 leans Optimization (Pure Optimization).
Orcs Must Die! 2 leans a little harder on execution, though the gap is small.
Neighbours from Hell
Timing pranks between patrol windows
Orcs Must Die! 2
Co-op shooting and trap triggering
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Neighbours from Hell
The neighbour loops a fixed routine
Orcs Must Die! 2
Scripted wave pathing
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Neighbours from Hell
Routine unknown on first attempt, then converges
Orcs Must Die! 2
Endless mode shuffles compositions slightly
Orcs Must Die! 2 leans a little harder on optimization, though the gap is small.
Neighbours from Hell
Sequencing pranks for maximum combo rating
Orcs Must Die! 2
Upgrade spirit economy and trap synergies dominate
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.