head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
First-person puzzle adventure unraveling a Lovecraft-tinged island mystery.

Optimization · Pure Optimization
Optimising production chains and placement economics against a leaderboard clock.
Call of the Sea leans Optimization (Pure Optimization); Town Star 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.
Call of the Sea
Walking and clicking, no dexterity test
Town Star
Placing buildings has no dexterity demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of the Sea
No opponent of any kind
Town Star
Competition is leaderboard-parallel, not interactive prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of the Sea
Hidden solutions surprise only once
Town Star
Map spots differ slightly between starts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of the Sea
Deducing fixed puzzle logic is the whole game
Town Star
Production chains, worker flow and placement maths decide everything
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.