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 relaxed hidden-object hunt for cats with no pressure of any kind.

Optimization · Light / Casual
A choice-driven narrative adventure testing little beyond attention to consequences.
An Arcade Full of Cats leans Optimization (Light / Casual); Dreamfall Chapters 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.
An Arcade Full of Cats
Clicking cats requires only patience
Dreamfall Chapters
Walking and dialogue selection demand nothing physical
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
An Arcade Full of Cats
Nothing opposes you
Dreamfall Chapters
No adaptive opposition in a scripted narrative
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
An Arcade Full of Cats
Hidden cats are unknown until found, then done
Dreamfall Chapters
Choice consequences are hidden until they land
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
An Arcade Full of Cats
Systematic scene-scanning is the only technique
Dreamfall Chapters
Light puzzles and choice mapping, mostly story consumption
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.