head to head
Golden Sun asks more than Portal 2, and the gap is variance.

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

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Golden Sun leans Optimization (Pure Optimization); Portal 2 leans Optimization (Pure Optimization).
Portal 2 leans a little harder on execution, though the gap is small.
Golden Sun
Fully turn-based Djinn-based combat; no timing demands
Portal 2
Portal placement requires some precision but timing is lenient.
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 2
No opponent; puzzles are static.
Golden Sun leans clearly harder on variance.
Golden Sun
Djinn status randomness and summon charge timing add minor variance
Portal 2
Puzzles are deterministic with no randomness.
Portal 2 leans a little harder on optimization, though the gap is small.
Golden Sun
Djinn set theory, Psynergy routing, and summon sequencing are deeply solvable
Portal 2
Solving the puzzle's logic IS the entire game.
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.