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

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

Variance · Light / Casual
Tests narrative taste and choice curiosity, not competitive skill of any kind.
Firewatch leans Optimization (Light / Casual); The Cosmic Wheel Sisterhood leans Variance (Light / Casual).
Firewatch leans a little harder on execution, though the gap is small.
Firewatch
Walking and radio dialogue only.
The Cosmic Wheel Sisterhood
Crafting cards and reading dialogue needs 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.
The Cosmic Wheel Sisterhood
Characters react along scripted branches, never adapting
The Cosmic Wheel Sisterhood leans a little harder on variance, though the gap is small.
Firewatch
Minor environmental discoveries.
The Cosmic Wheel Sisterhood
Story consequences are hidden until choices land
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Firewatch
Few systems to optimize.
The Cosmic Wheel Sisterhood
Card-crafting economy is light and forgiving
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.