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 cosy late-night cafe story where listening to fantasy-world patrons is the experience.

Optimization · Light / Casual
A first-person mystery about a fire lookout in a Wyoming forest.
Coffee Talk leans Optimization (Light / Casual); Firewatch leans Optimization (Light / Casual).
Firewatch leans a little harder on execution, though the gap is small.
Coffee Talk
Brewing is a simple icon selection
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.
Coffee Talk
Customer stories follow scripted beats
Firewatch
No adaptive opposition.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Coffee Talk
Occasional recipe choices affect endings but space is tiny
Firewatch
Minor environmental discoveries.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Coffee Talk
Learning correct drink combos for good ends is a minimal optimisation layer
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.