head to head
Super Mario Galaxy 2 asks more than The Witcher 3: Wild Hunt, and the gap is execution.

Execution · Practiced Mastery
A 3D platformer about precise gravity-bending jumps through fixed galaxies.

Optimization · Practiced Mastery
A narrative action RPG where build planning matters more than reflex execution.
Super Mario Galaxy 2 leans Execution (Practiced Mastery); The Witcher 3: Wild Hunt leans Optimization (Practiced Mastery).
Super Mario Galaxy 2 leans clearly harder on execution.
Super Mario Galaxy 2
Precise jumps and gravity navigation define every galaxy
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.
Super Mario Galaxy 2
Bosses are scripted patterns, not adapting to you
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.
Super Mario Galaxy 2
Levels are deterministic, nothing random
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.
Super Mario Galaxy 2
Learning fixed layouts and routes for stars
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.