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 · Light / Casual
A gentle daily-life village sim about decorating, collecting, and chatting with animal neighbors.

Optimization · Light / Casual
A first-person mystery about a fire lookout in a Wyoming forest.
Animal Crossing: New Leaf leans Optimization (Light / Casual); Firewatch leans Optimization (Light / Casual).
Firewatch leans a little harder on execution, though the gap is small.
Animal Crossing: New Leaf
No dexterity demands beyond menu navigation
Firewatch
Walking and radio dialogue only.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Animal Crossing: New Leaf
No opponents at all
Firewatch
No adaptive opposition.
Animal Crossing: New Leaf leans a little harder on variance, though the gap is small.
Animal Crossing: New Leaf
Daily RNG visitors, fossils, turnip prices
Firewatch
Minor environmental discoveries.
Animal Crossing: New Leaf leans a little harder on optimization, though the gap is small.
Animal Crossing: New Leaf
Turnip market and town planning lightly reward optimizing
Firewatch
Few systems to optimize.
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.