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

Optimization · Light / Casual
A branching story that tests choice exploration more than any skill.
An Arcade Full of Cats leans Optimization (Light / Casual); Detroit: Become Human leans Optimization (Light / Casual).
Detroit: Become Human leans a little harder on execution, though the gap is small.
An Arcade Full of Cats
Clicking cats requires only patience
Detroit: Become Human
Quick-time events demand only basic reaction timing
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
Detroit: Become Human
Branching script, no adaptive adversary
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
Detroit: Become Human
Branch consequences are hidden information until explored
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
Detroit: Become Human
Flowchart completion is a light solvable puzzle
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.