head to head
Returnal asks more than Warhammer: Vermintide 2, and the gap is variance.

Execution · Twitch Chaos
Bullet-hell roguelike third-person shooter.

Execution · Practiced Mastery
Co-op melee horde shooter with deep builds.
Returnal leans Execution (Twitch Chaos); Warhammer: Vermintide 2 leans Execution (Practiced Mastery).
Returnal leans a little harder on execution, though the gap is small.
Returnal
Bullet-hell dodge and aim under pressure
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.
Returnal
Bosses scripted, patterns not adaptive
Warhammer: Vermintide 2
Specials are scripted, not adaptive
Returnal leans clearly harder on variance.
Returnal
Room layouts, parasites, items roguelike
Warhammer: Vermintide 2
Director spawns and loot randomize runs
Warhammer: Vermintide 2 leans a little harder on optimization, though the gap is small.
Returnal
Build synergies and route planning
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.