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 · Pure Optimization
A surreal puzzle-adventure about nesting worlds inside orbs.

Optimization · Pure Optimization
An underwater survival game won by methodical tech progression.
Cocoon leans Optimization (Pure Optimization); Subnautica leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Cocoon
Inputs are simple movement and a button.
Subnautica
Movement is slow; no precision demands.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cocoon
Puzzles are fixed designs.
Subnautica
Creatures follow scripted patrols; no adaptation.
Subnautica leans a little harder on variance, though the gap is small.
Cocoon
No randomness.
Subnautica
Resource node placement mildly randomized.
Subnautica leans a little harder on optimization, though the gap is small.
Cocoon
Pure puzzle logic, solvable by reasoning.
Subnautica
Tech progression and base routing solve the ocean.
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.