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.

Variance · Light / Casual
An exploration of narrative branches that deliberately tests nothing.

Variance · Light / Casual
A painterly hidden-object game testing visual scanning patience.
The Stanley Parable leans Variance (Light / Casual); Under Leaves leans Variance (Light / Casual).
Under Leaves leans a little harder on execution, though the gap is small.
The Stanley Parable
Walking is the only input
Under Leaves
Tapping spotted objects requires nothing physical
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
The Stanley Parable
The narrator is a script, however much he pretends otherwise
Under Leaves
No opponent exists
Under Leaves leans a little harder on variance, though the gap is small.
The Stanley Parable
Endings are hidden information until you wander into them
Under Leaves
Object locations are hidden until found - that is the game
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
The Stanley Parable
Finding all branches is a trivial checklist
Under Leaves
Systematic scanning is the only technique
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.