head to head
The Outer Worlds asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.

Optimization · Pure Optimization
A perk-driven sci-fi RPG won by flaw selection and dialogue routing.
Portal leans Optimization (Pure Optimization); The Outer Worlds leans Optimization (Pure Optimization).
Portal leans a little harder on execution, though the gap is small.
Portal
Portal placement timing modest.
The Outer Worlds
FPS-lite with time-dilation aim
The Outer Worlds leans a little harder on reads, though the gap is small.
Portal
No adversary modeling player.
The Outer Worlds
Scripted enemies
The Outer Worlds leans clearly harder on variance.
Portal
Deterministic chambers; no randomness.
The Outer Worlds
Loot rolls, dialogue check variance
Portal leans a little harder on optimization, though the gap is small.
Portal
Pure puzzle-solving optimization.
The Outer Worlds
Perks, flaws, dialogue routing rewarded
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.