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 · Pure Optimization
A relaxed town-building life sim set after the hero already saved the world.
Animal Crossing: New Horizons leans Optimization (Pure Optimization); Littlewood leans Optimization (Pure Optimization).
Animal Crossing: New Horizons leans a little harder on execution, though the gap is small.
Animal Crossing: New Horizons
Trivial inputs.
Littlewood
No dexterity, energy-based actions
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.
Littlewood
No opposition
Animal Crossing: New Horizons leans a little harder on variance, though the gap is small.
Animal Crossing: New Horizons
Daily visitors and fossils randomize.
Littlewood
Mild RNG in gathering and townsfolk requests
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.
Littlewood
Town layout and daily energy routing reward planning
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.