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

Optimization · Pure Optimization
Designing ships and spreading influence across a randomly generated galaxy through deep optimization.

Optimization · Pure Optimization
An original RPG system where engagement optimization and passive-stacking theory dominate hard-mode encounters.
Galactic Civilizations III leans Optimization (Pure Optimization); Pillars of Eternity leans Optimization (Pure Optimization).
Pillars of Eternity leans a little harder on execution, though the gap is small.
Galactic Civilizations III
Fully turn-based; no physical skill axis
Pillars of Eternity
Real-time-with-pause removes all twitch pressure from the player
Galactic Civilizations III leans a little harder on reads, though the gap is small.
Galactic Civilizations III
AI races have static personalities and no adaptive opponent modelling
Pillars of Eternity
All AI opponents use fixed scripted behaviour trees
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Galactic Civilizations III
Random galaxy layouts and events add manageable unknowns
Pillars of Eternity
Hidden enemy immunities and ability distributions require investigation
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Galactic Civilizations III
Ship design, influence spreading, and tech tree form a deep optimization puzzle
Pillars of Eternity
Per-encounter ability management and passive stacking define trial-of-iron mastery
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.