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
A dialogue RPG resolved by stat builds against dice checks.

Optimization · Pure Optimization
A narrative RPG that tests knowledge of its philosophical systems and dialogue trees more than any combat skill.
Disco Elysium leans Optimization (Pure Optimization); Planescape: Torment leans Optimization (Pure Optimization).
Planescape: Torment leans a little harder on execution, though the gap is small.
Disco Elysium
No mechanical inputs of consequence
Planescape: Torment
Combat is deemphasised; the game is built to be avoided or trivial
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Disco Elysium
Dialogue partners are scripted, not modeling you
Planescape: Torment
NPCs are scripted personalities; no adaptive opponent exists
Disco Elysium leans a little harder on variance, though the gap is small.
Disco Elysium
Skill checks roll dice with hidden modifiers
Planescape: Torment
Some dialogue outcomes and item discoveries are hidden until explored
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Disco Elysium
Build skills and route choices to pass checks
Planescape: Torment
Stat allocation, dialogue routing and companion management reward system 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.