head to head
MiSide 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 narrative horror experience testing curiosity more than any skill axis.
Firewatch leans Optimization (Light / Casual); MiSide 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.
MiSide
Walking and minigames make light physical demands
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.
MiSide
Mita is a scripted character, not an adaptive mind
MiSide leans clearly harder on variance.
Firewatch
Minor environmental discoveries.
MiSide
Story surprises are hidden only until experienced
MiSide leans a little harder on optimization, though the gap is small.
Firewatch
Few systems to optimize.
MiSide
Linear narrative with simple puzzles to step through
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.