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.

Optimization · Pure Optimization
An underwater survival game won by methodical tech progression.

Optimization · Pure Optimization
Zelda-starring adventure where summoning copied objects and monsters solves combat and puzzles alike.
Subnautica leans Optimization (Pure Optimization); The Legend of Zelda: Echoes of Wisdom leans Optimization (Pure Optimization).
The Legend of Zelda: Echoes of Wisdom leans a little harder on execution, though the gap is small.
Subnautica
Movement is slow; no precision demands.
The Legend of Zelda: Echoes of Wisdom
Light action; echoes fight for you
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Subnautica
Creatures follow scripted patrols; no adaptation.
The Legend of Zelda: Echoes of Wisdom
Scripted enemies throughout
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Subnautica
Resource node placement mildly randomized.
The Legend of Zelda: Echoes of Wisdom
First-run discovery of echoes and rifts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Subnautica
Tech progression and base routing solve the ocean.
The Legend of Zelda: Echoes of Wisdom
Choosing which copied object solves each room
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.