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
A dinosaur survival game about taming, building, and tribal warfare on a hostile island.

Optimization · Practiced Mastery
A blocky free-to-play zombie survival sandbox mixing scavenging, basebuilding, and PvP.
ARK: Survival Evolved leans Optimization (Pure Optimization); Unturned leans Optimization (Practiced Mastery).
Unturned leans a little harder on execution, though the gap is small.
ARK: Survival Evolved
Shooting and kiting matter in raids
Unturned
Gunfights and driving reward aim and control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
ARK: Survival Evolved
Tribe warfare involves human deception and politics
Unturned
Human raiders and ambushes on PvP servers
Unturned leans a little harder on variance, though the gap is small.
ARK: Survival Evolved
Taming rolls, spawns, and surprise raids
Unturned
Loot spawns and unknown player positions
ARK: Survival Evolved leans a little harder on optimization, though the gap is small.
ARK: Survival Evolved
Breeding lines, base design, and farming dominate
Unturned
Base building, loot routes, and crafting economy
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.