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 · Practiced Mastery
Build optimization and learned monster weak points, executed through physical climb-and-strike combat.

Optimization · Practiced Mastery
An action RPG where leveling means choosing which Londoners to drain.
Dragon's Dogma: Dark Arisen leans Optimization (Practiced Mastery); Vampyr leans Optimization (Practiced Mastery).
Dragon's Dogma: Dark Arisen leans a little harder on execution, though the gap is small.
Dragon's Dogma: Dark Arisen
Climbing monsters and timing skills demands real combat dexterity
Vampyr
Dodge-and-stamina melee combat with modest demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon's Dogma: Dark Arisen
Pawns and monsters follow learnable scripted behaviours
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.
Dragon's Dogma: Dark Arisen
Bitterblack loot rolls and night spawns add managed randomness
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.
Dragon's Dogma: Dark Arisen
Vocation builds, augment stacking and monster weak-point knowledge dominate
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.