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
Cyberpunk horror where a detective hacks the memories of the dying.

Variance · Light / Casual
A first-person psychological horror set in a cursed family home.
Observer leans Optimization (Light / Casual); Visage 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.
Observer
Walking with brief stealth segments
Visage
Slow movement and item use.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Observer
The stalker sequence is scripted
Visage
Ghosts follow scripted triggers.
Visage leans a little harder on variance, though the gap is small.
Observer
Unknown story branches and apartment secrets
Visage
Some scares and item placements vary.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Observer
Investigation logic and clue piecing
Visage
Sanity management is shallow.
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.