head to head
Conan Exiles asks more than Portal, and the gap is reads.

Optimization · Pure Optimization
Survival sandbox with brutal PvP base raiding.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Conan Exiles leans Optimization (Pure Optimization); Portal 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.
Conan Exiles
Melee and bow combat inputs
Portal
Portal placement timing modest.
Conan Exiles leans clearly harder on reads.
Conan Exiles
PvP raids reward reading defenders
Portal
No adversary modeling player.
Conan Exiles leans clearly harder on variance.
Conan Exiles
Loot and purge events
Portal
Deterministic chambers; no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Conan Exiles
Base layout, thrall farming, gear progression
Portal
Pure puzzle-solving optimization.
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.