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 comedic bird-populated visual novel courtroom drama in the style of Ace Attorney.

Optimization · Light / Casual
A first-person mystery about a fire lookout in a Wyoming forest.
Aviary Attorney leans Optimization (Light / Casual); Firewatch leans Optimization (Light / Casual).
Firewatch leans a little harder on execution, though the gap is small.
Aviary Attorney
no physical skill, dialogue-driven
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.
Aviary Attorney
no adversarial adaptive opponent
Firewatch
No adaptive opposition.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Aviary Attorney
minimal randomness in outcomes
Firewatch
Minor environmental discoveries.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Aviary Attorney
linear case logic, little to optimize
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.