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

Optimization · Pure Optimization
An open-world shooter-RPG won by perk routing and weapon mod optimization.

Optimization · Practiced Mastery
An action RPG where leveling means choosing which Londoners to drain.
Fallout 4 leans Optimization (Pure Optimization); Vampyr leans Optimization (Practiced Mastery).
Vampyr leans a little harder on execution, though the gap is small.
Fallout 4
FPS aiming, VATS softens demand
Vampyr
Dodge-and-stamina melee combat with modest demands
Fallout 4 leans a little harder on reads, though the gap is small.
Fallout 4
Scripted enemy AI
Vampyr
Enemies follow scripted patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout 4
Loot and legendary rolls
Vampyr
Citizen secrets are hidden until investigated
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout 4
Perks, settlement, weapon mod planning
Vampyr
The feed-or-spare XP economy is the central solvable system
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.