head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Practiced Mastery
Comedy RPG where every turn-based attack hides an action-timing minigame.

Optimization · Practiced Mastery
A demanding action RPG where dodge timing meets alchemy build planning.
Mario & Luigi: Superstar Saga leans Optimization (Practiced Mastery); The Witcher 2: Assassins of Kings leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Mario & Luigi: Superstar Saga
Timed hits and dodge jumps every turn
The Witcher 2: Assassins of Kings
Tight dodge and parry windows
The Witcher 2: Assassins of Kings leans a little harder on reads, though the gap is small.
Mario & Luigi: Superstar Saga
Bosses telegraph fixed patterns
The Witcher 2: Assassins of Kings
Scripted enemy patterns
The Witcher 2: Assassins of Kings leans a little harder on variance, though the gap is small.
Mario & Luigi: Superstar Saga
Encounters are authored
The Witcher 2: Assassins of Kings
Some loot and alchemy variance
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario & Luigi: Superstar Saga
Bros. Attack mastery and stat builds
The Witcher 2: Assassins of Kings
Sign, alchemy, and skill builds matter
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.