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

Execution · Practiced Mastery
Tests fast maze execution and ghost-train routing under randomized attack pressure.

Execution · Practiced Mastery
Co-op melee horde shooter with deep builds.
Pac-Man 99 leans Execution (Practiced Mastery); Warhammer: Vermintide 2 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Pac-Man 99
Maze steering at speed under jammer pressure decides survival
Warhammer: Vermintide 2
Melee timing, dodges, headshots demanding
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pac-Man 99
98 opponents are anonymous noise, not readable minds
Warhammer: Vermintide 2
Specials are scripted, not adaptive
Warhammer: Vermintide 2 leans a little harder on variance, though the gap is small.
Pac-Man 99
Incoming attacks and ghost spawns randomize each match
Warhammer: Vermintide 2
Director spawns and loot randomize runs
Warhammer: Vermintide 2 leans a little harder on optimization, though the gap is small.
Pac-Man 99
Ghost-train routing and target strategies have known best lines
Warhammer: Vermintide 2
Builds, talents, weapon breakpoints solvable
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.