head to head
Neither is simply harder - they are hard in different places. Space Channel 5: Part 2 demands more execution; The Witcher 3: Wild Hunt demands more optimization.

Execution · Practiced Mastery
A stylish call-and-response rhythm adventure where reporter Ulala dances to save the galaxy.

Optimization · Practiced Mastery
A narrative action RPG where build planning matters more than reflex execution.
Space Channel 5: Part 2 leans Execution (Practiced Mastery); The Witcher 3: Wild Hunt leans Optimization (Practiced Mastery).
Space Channel 5: Part 2 leans clearly harder on execution.
Space Channel 5: Part 2
Precise timing on call-and-response button sequences
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.
Space Channel 5: Part 2
Sequences are scripted
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.
Space Channel 5: Part 2
First playthrough hides upcoming commands
The Witcher 3: Wild Hunt
Loot rolls and minor combat variance only.
The Witcher 3: Wild Hunt leans clearly harder on optimization.
Space Channel 5: Part 2
Memorizing every routine for perfect runs
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.