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
A cozy island life-sim about building a community at your pace.

Optimization · Systems & Chaos
A noir detective adventure starring Discworld's first private investigator on a case that turns lycanthropic.
Animal Crossing: New Horizons leans Optimization (Pure Optimization); Discworld Noir leans Optimization (Systems & Chaos).
Animal Crossing: New Horizons leans a little harder on execution, though the gap is small.
Animal Crossing: New Horizons
Trivial inputs.
Discworld Noir
Click-based sleuthing; nothing physical.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Animal Crossing: New Horizons
NPCs are scripted.
Discworld Noir
Suspects recite fixed noir scripts.
Discworld Noir leans a little harder on variance, though the gap is small.
Animal Crossing: New Horizons
Daily visitors and fossils randomize.
Discworld Noir
Clue-notebook mystery hides connections until found.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Animal Crossing: New Horizons
Turnips, layout, and time-routing reward planning.
Discworld Noir
Cross-referencing clues converges to one fixed solution.
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.