head to head
Grand Theft Auto V asks more than Nightmare Creatures, and the gap is reads.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.

Execution · Practiced Mastery
Gothic PS1 action horror of brutal melee against Victorian monsters.
Grand Theft Auto V leans Execution (Practiced Mastery); Nightmare Creatures leans Execution (Practiced Mastery).
Nightmare Creatures leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Nightmare Creatures
Combo timing and dodges against tough monsters
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Nightmare Creatures
Creatures use fixed attack patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Some mission and lobby randomness.
Nightmare Creatures
Ambush placement unknown first time through
Nightmare Creatures leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Nightmare Creatures
Adrenaline meter management and route learning
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.