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
The original post-apocalyptic CRPG where character builds solve the wasteland.

Optimization · Pure Optimization
A grid-based dungeon crawler about deep party building and environmental puzzles.
Fallout leans Optimization (Pure Optimization); The Bard's Tale IV leans Optimization (Pure Optimization).
The Bard's Tale IV leans a little harder on execution, though the gap is small.
Fallout
Turn-based, no dexterity
The Bard's Tale IV
grid-based combat needs little manual skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout
No adaptive opposition
The Bard's Tale IV
scripted monster AI, no true adaptation
Fallout leans a little harder on variance, though the gap is small.
Fallout
To-hit rolls and random encounters
The Bard's Tale IV
loot and encounter randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout
SPECIAL builds and quest routing are deeply solvable
The Bard's Tale IV
deep party build and puzzle-solving systems
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.