head to head
Neither is simply harder - they are hard in different places. Roblox demands more reads; The Witcher 3: Wild Hunt demands more optimization.

Execution · Practiced Mastery
A platform of millions of user-created multiplayer games spanning every genre, played mostly by younger audiences.

Optimization · Practiced Mastery
A narrative action RPG where build planning matters more than reflex execution.
Roblox leans Execution (Practiced Mastery); The Witcher 3: Wild Hunt 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.
Roblox
Many popular experiences are obby/PvP tests of hands
The Witcher 3: Wild Hunt
Combat timing matters but generous dodges forgive sloppy play.
Roblox leans clearly harder on reads.
Roblox
Multiplayer experiences pit you against other kids' minds
The Witcher 3: Wild Hunt
Enemies use fixed AI behaviours; no adaptation.
Roblox leans a little harder on variance, though the gap is small.
Roblox
User-generated content means constant unknown systems
The Witcher 3: Wild Hunt
Loot rolls and minor combat variance only.
The Witcher 3: Wild Hunt leans clearly harder on optimization.
Roblox
Grind economies and trading reward system mastery
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.