head to head
Erica asks more than Firewatch, and the gap is variance.

Variance · Light / Casual
A live-action FMV thriller steered through touchpad choices and gestures.

Optimization · Light / Casual
A first-person mystery about a fire lookout in a Wyoming forest.
Erica leans Variance (Light / Casual); Firewatch leans Optimization (Light / Casual).
Firewatch leans a little harder on execution, though the gap is small.
Erica
Touch gestures with no skill ceiling
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.
Erica
No opponent
Firewatch
No adaptive opposition.
Erica leans clearly harder on variance.
Erica
Branch outcomes hidden on first viewing
Firewatch
Minor environmental discoveries.
Erica leans a little harder on optimization, though the gap is small.
Erica
Mapping choice branches across replays
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.