head to head
Outlast asks more than Firewatch, and the gap is execution.

Optimization · Light / Casual
A first-person mystery about a fire lookout in a Wyoming forest.

Execution · Light / Casual
A first-person horror about a journalist investigating an asylum.
Firewatch leans Optimization (Light / Casual); Outlast leans Execution (Light / Casual).
Outlast leans clearly harder on execution.
Firewatch
Walking and radio dialogue only.
Outlast
Running, hiding, and camera use.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Firewatch
No adaptive opposition.
Outlast
Enemies follow scripts.
Outlast leans a little harder on variance, though the gap is small.
Firewatch
Minor environmental discoveries.
Outlast
Mild patrol variance.
Outlast leans a little harder on optimization, though the gap is small.
Firewatch
Few systems to optimize.
Outlast
Battery and route planning shallow.
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.