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
The classic AD&D CRPG where party planning beats dice luck over time.

Optimization · Pure Optimization
A gothic horror RPG blending survival-horror atmosphere with tactical grid battles in a haunted Welsh monastery.
Baldur's Gate leans Optimization (Pure Optimization); Koudelka 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.
Baldur's Gate
Pause-and-play needs minimal dexterity.
Koudelka
Turn-based grid combat, no dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Baldur's Gate
Scripted encounters, no adaptation.
Koudelka
Monsters act on simple fixed logic
Baldur's Gate leans a little harder on variance, though the gap is small.
Baldur's Gate
AD&D dice rolls throughout.
Koudelka
Random encounters and drop rolls
Baldur's Gate leans a little harder on optimization, though the gap is small.
Baldur's Gate
Party builds and encounter prep solvable.
Koudelka
Stat allocation and durability planning decide fights
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.