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 · Practiced Mastery
A first-person Metroid adventure spanning planets, steered with the Wii's motion-aimed cannon.

Optimization · Practiced Mastery
A narrative action RPG where build planning matters more than reflex execution.
Metroid Prime 3: Corruption leans Optimization (Practiced Mastery); The Witcher 3: Wild Hunt leans Optimization (Practiced Mastery).
Metroid Prime 3: Corruption leans a little harder on execution, though the gap is small.
Metroid Prime 3: Corruption
Pointer aiming and Hypermode management in fights.
The Witcher 3: Wild Hunt
Combat timing matters but generous dodges forgive sloppy play.
The Witcher 3: Wild Hunt leans a little harder on reads, though the gap is small.
Metroid Prime 3: Corruption
Scripted bosses and pirates.
The Witcher 3: Wild Hunt
Enemies use fixed AI behaviours; no adaptation.
The Witcher 3: Wild Hunt leans a little harder on variance, though the gap is small.
Metroid Prime 3: Corruption
Deterministic worlds.
The Witcher 3: Wild Hunt
Loot rolls and minor combat variance only.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metroid Prime 3: Corruption
Scanning, sequencing, and multi-planet routing drive progress.
The Witcher 3: Wild Hunt
Builds, alchemy, and quest routing reward planning.
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.