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

Optimization · Pure Optimization
An original RPG system where engagement optimization and passive-stacking theory dominate hard-mode encounters.

Optimization · Pure Optimization
A Greek-myth loot ARPG won in the build screen, not the battlefield.
Pillars of Eternity leans Optimization (Pure Optimization); Titan Quest 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.
Pillars of Eternity
Real-time-with-pause removes all twitch pressure from the player
Titan Quest
Click-to-attack combat needs little physical skill
Pillars of Eternity leans a little harder on reads, though the gap is small.
Pillars of Eternity
All AI opponents use fixed scripted behaviour trees
Titan Quest
Mythological monsters follow fixed behaviors
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Pillars of Eternity
Hidden enemy immunities and ability distributions require investigation
Titan Quest
Loot drops gate builds behind RNG
Pillars of Eternity leans a little harder on optimization, though the gap is small.
Pillars of Eternity
Per-encounter ability management and passive stacking define trial-of-iron mastery
Titan Quest
Mastery combinations and gear math dominate outcomes
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.