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 first-person exploration about returning to an empty family home.

Optimization · Light / Casual
A meta-narrative walking sim about defying or obeying a scripted narrator.
Gone Home leans Optimization (Light / Casual); The Stanley Parable: Ultra Deluxe 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.
Gone Home
Pure walking and inspection.
The Stanley Parable: Ultra Deluxe
Walking and clicking, no mechanical demand.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gone Home
No opponents.
The Stanley Parable: Ultra Deluxe
Narrator is scripted, not adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Gone Home
Notes and items are fixed.
The Stanley Parable: Ultra Deluxe
Hidden endings to discover.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Gone Home
Order of discovery hardly matters.
The Stanley Parable: Ultra Deluxe
Mapping ending tree rewards completionists.
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.