head to head
Neither is simply harder - they are hard in different places. Call of Duty: Modern Warfare 2 Campaign Remastered demands more execution; The Witcher 3: Wild Hunt demands more optimization.

Execution · Practiced Mastery
Aim and spawn memorisation through a fully scripted cinematic campaign.

Optimization · Practiced Mastery
A narrative action RPG where build planning matters more than reflex execution.
Call of Duty: Modern Warfare 2 Campaign Remastered leans Execution (Practiced Mastery); The Witcher 3: Wild Hunt leans Optimization (Practiced Mastery).
Call of Duty: Modern Warfare 2 Campaign Remastered leans clearly harder on execution.
Call of Duty: Modern Warfare 2 Campaign Remastered
Aim and reaction carry every scripted firefight
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.
Call of Duty: Modern Warfare 2 Campaign Remastered
Enemies spawn and behave on fixed scripts
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.
Call of Duty: Modern Warfare 2 Campaign Remastered
Set-piece campaign with almost nothing random
The Witcher 3: Wild Hunt
Loot rolls and minor combat variance only.
The Witcher 3: Wild Hunt leans clearly harder on optimization.
Call of Duty: Modern Warfare 2 Campaign Remastered
Learning spawns and cover lines trivialises veteran difficulty
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.
full breakdown
Call of Duty: Modern Warfare 2 Campaign Remastered →
full breakdown
The Witcher 3: Wild Hunt →