head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Light / Casual
A first-person exploration about returning to an empty family home.

Variance · Light / Casual
An exploration of narrative branches that deliberately tests nothing.
Gone Home leans Optimization (Light / Casual); The Stanley Parable leans Variance (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
Walking is the only input
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
The narrator is a script, however much he pretends otherwise
The Stanley Parable leans a little harder on variance, though the gap is small.
Gone Home
Notes and items are fixed.
The Stanley Parable
Endings are hidden information until you wander into them
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
Finding all branches is a trivial checklist
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.