head to head
Hidden Through Time asks more than Firewatch, and the gap is variance.

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

Variance · Light / Casual
A relaxed seek-and-find testing patience and visual scanning, not skill.
Firewatch leans Optimization (Light / Casual); Hidden Through Time leans Variance (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.
Hidden Through Time
Clicking found objects takes nothing
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.
Hidden Through Time
No opponent in a seek-and-find
Hidden Through Time leans clearly harder on variance.
Firewatch
Minor environmental discoveries.
Hidden Through Time
Object locations are hidden exactly once per map
Hidden Through Time leans a little harder on optimization, though the gap is small.
Firewatch
Few systems to optimize.
Hidden Through Time
Systematic scanning beats wandering, but barely a system
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.