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 puzzle-RPG hybrid where Djinn combination theory and Psynergy routing trivializes its scripted encounters.
Fallout leans Optimization (Pure Optimization); Golden Sun leans Optimization (Pure Optimization).
Golden Sun leans a little harder on execution, though the gap is small.
Fallout
Turn-based, no dexterity
Golden Sun
Fully turn-based Djinn-based combat; no timing demands
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
Golden Sun
All bosses are scripted pattern fighters
Fallout leans a little harder on variance, though the gap is small.
Fallout
To-hit rolls and random encounters
Golden Sun
Djinn status randomness and summon charge timing add minor variance
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
Golden Sun
Djinn set theory, Psynergy routing, and summon sequencing are deeply solvable
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.