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.

Optimization · Light / Casual
A storybook puzzler where you reveal an all-white world by throwing paint at it.
Firewatch leans Optimization (Light / Casual); The Unfinished Swan leans Optimization (Light / Casual).
The Unfinished Swan leans a little harder on execution, though the gap is small.
Firewatch
Walking and radio dialogue only.
The Unfinished Swan
Aiming paint blobs takes mild coordination.
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 Unfinished Swan
No opponent.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Firewatch
Minor environmental discoveries.
The Unfinished Swan
Unknown white-void spaces until splattered, then fixed.
The Unfinished Swan leans a little harder on optimization, though the gap is small.
Firewatch
Few systems to optimize.
The Unfinished Swan
Simple navigation puzzles with single intended solutions.
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.