head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

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

Optimization · Light / Casual
A guided noir investigation testing attention more than any skill ceiling.
Firewatch leans Optimization (Light / Casual); Nobody Wants to Die leans Optimization (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Firewatch
Walking and radio dialogue only.
Nobody Wants to Die
Guided investigation scenes need no dexterity
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.
Nobody Wants to Die
The killer is an authored mystery, not an adapting mind
Nobody Wants to Die leans a little harder on variance, though the gap is small.
Firewatch
Minor environmental discoveries.
Nobody Wants to Die
Evidence is scripted-but-unknown until reconstructed
Nobody Wants to Die leans a little harder on optimization, though the gap is small.
Firewatch
Few systems to optimize.
Nobody Wants to Die
Reconstruction tools make deductions mostly guided
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.