head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Light / Casual
A choice-driven narrative adventure testing little beyond attention to consequences.

Optimization · Light / Casual
Short narrative horror about a doomed freighter crew told in fractured time.
Dreamfall Chapters leans Optimization (Light / Casual); Mouthwashing leans Optimization (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dreamfall Chapters
Walking and dialogue selection demand nothing physical
Mouthwashing
Walking and simple interactions
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dreamfall Chapters
No adaptive opposition in a scripted narrative
Mouthwashing
No opposition; it is a story
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dreamfall Chapters
Choice consequences are hidden until they land
Mouthwashing
Narrative surprises only on first viewing
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dreamfall Chapters
Light puzzles and choice mapping, mostly story consumption
Mouthwashing
Light puzzles guide a fixed story
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.