head to head
Gothic asks more than Portal, and the gap is variance.

Optimization · Pure Optimization
Unforgiving open-world RPG colony where knowing the world is the real power curve.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Gothic 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.
Gothic
Clunky but learnable directional melee timing
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Gothic
Creatures and NPCs follow fixed behaviors
Portal
No adversary modeling player.
Gothic leans clearly harder on variance.
Gothic
Unknown world dangers on first playthrough
Portal
Deterministic chambers; no randomness.
Portal leans a little harder on optimization, though the gap is small.
Gothic
Faction routes, skill investment, and world knowledge
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.