head to head
Neither is simply harder - they are hard in different places. Pillars of Eternity II: Deadfire demands more variance; Portal demands more execution.

Optimization · Pure Optimization
A multiclass optimization sandbox where subclass combinations produce exotic damage ceilings for theory-crafters.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Pillars of Eternity II: Deadfire leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Pillars of Eternity II: Deadfire
Pause-heavy combat requires deliberate decision-making, not reaction speed
Portal
Portal placement timing modest.
Pillars of Eternity II: Deadfire leans a little harder on reads, though the gap is small.
Pillars of Eternity II: Deadfire
Enemy AI is scripted; ship combat follows fixed rulesets
Portal
No adversary modeling player.
Pillars of Eternity II: Deadfire leans clearly harder on variance.
Pillars of Eternity II: Deadfire
Ship encounter positioning and hidden item stats add unknowns
Portal
Deterministic chambers; no randomness.
Pillars of Eternity II: Deadfire leans clearly harder on optimization.
Pillars of Eternity II: Deadfire
Multiclass subclass stacking produces near-broken optimization ceilings
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.