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 guided horror story that tests patience and light puzzle-spotting, not skill.

Optimization · Light / Casual
Cyberpunk horror where a detective hacks the memories of the dying.
Close to the Sun leans Optimization (Light / Casual); Observer 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.
Close to the Sun
Walking with occasional scripted chases - minimal dexterity
Observer
Walking with brief stealth segments
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Close to the Sun
Scripted horror story, nothing adapts
Observer
The stalker sequence is scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Close to the Sun
Scares are unknown first time, fixed forever after
Observer
Unknown story branches and apartment secrets
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Close to the Sun
Light environmental puzzles with single solutions
Observer
Investigation logic and clue piecing
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.