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

Optimization · Pure Optimization
Planning augmented routes through dense environments where augment investment and sequencing define efficiency.

Optimization · Practiced Mastery
An action RPG where leveling means choosing which Londoners to drain.
Deus Ex: Mankind Divided leans Optimization (Pure Optimization); Vampyr 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.
Deus Ex: Mankind Divided
Takedown timing and combat aim have a real ceiling
Vampyr
Dodge-and-stamina melee combat with modest demands
Deus Ex: Mankind Divided leans a little harder on reads, though the gap is small.
Deus Ex: Mankind Divided
Guards are scripted; no opponent models the player
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.
Deus Ex: Mankind Divided
Alert thresholds add some hidden-state wrinkle to infiltration
Vampyr
Citizen secrets are hidden until investigated
Deus Ex: Mankind Divided leans a little harder on optimization, though the gap is small.
Deus Ex: Mankind Divided
Praxis allocation and approach sequencing optimise mission completion
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.