head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Optimization · Pure Optimization
A post-nuclear RPG expanded in scope where tagged builds and Gifted-trait optimization dominate.

Optimization · Pure Optimization
A multiclass optimization sandbox where subclass combinations produce exotic damage ceilings for theory-crafters.
Fallout 2 leans Optimization (Pure Optimization); Pillars of Eternity II: Deadfire 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.
Fallout 2
Turn-based AP system makes twitch entirely irrelevant
Pillars of Eternity II: Deadfire
Pause-heavy combat requires deliberate decision-making, not reaction speed
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout 2
All tribal and Enclave enemies run fixed scripted combat routines
Pillars of Eternity II: Deadfire
Enemy AI is scripted; ship combat follows fixed rulesets
Fallout 2 leans a little harder on variance, though the gap is small.
Fallout 2
Hidden special encounters and timed events create significant unknown-information space
Pillars of Eternity II: Deadfire
Ship encounter positioning and hidden item stats add unknowns
Pillars of Eternity II: Deadfire leans a little harder on optimization, though the gap is small.
Fallout 2
SPECIAL and skill tagging with Gifted trait produce well-known dominant build strategies
Pillars of Eternity II: Deadfire
Multiclass subclass stacking produces near-broken optimization ceilings
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.