head to head
Neither is simply harder - they are hard in different places. Golden Sun demands more variance; Portal demands more execution.

Optimization · Pure Optimization
A puzzle-RPG hybrid where Djinn combination theory and Psynergy routing trivializes its scripted encounters.

Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Golden Sun leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Portal leans clearly harder on execution.
Golden Sun
Fully turn-based Djinn-based combat; no timing demands
Portal
Portal placement timing modest.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Golden Sun
All bosses are scripted pattern fighters
Portal
No adversary modeling player.
Golden Sun leans clearly harder on variance.
Golden Sun
Djinn status randomness and summon charge timing add minor variance
Portal
Deterministic chambers; no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Golden Sun
Djinn set theory, Psynergy routing, and summon sequencing are deeply solvable
Portal
Pure puzzle-solving optimization.
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.