head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Gothic PS1 action horror of brutal melee against Victorian monsters.

Execution · Practiced Mastery
Navigating maze-like levels and steady shooting against scripted prehistoric enemies.
Nightmare Creatures leans Execution (Practiced Mastery); Turok: Dinosaur Hunter 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.
Nightmare Creatures
Combo timing and dodges against tough monsters
Turok: Dinosaur Hunter
Platforming and aiming in fog-bound levels demand steady hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Nightmare Creatures
Creatures use fixed attack patterns
Turok: Dinosaur Hunter
Dinosaurs and soldiers run fixed attack routines
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Nightmare Creatures
Ambush placement unknown first time through
Turok: Dinosaur Hunter
Sprawling maze levels hide keys until explored
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Nightmare Creatures
Adrenaline meter management and route learning
Turok: Dinosaur Hunter
Route knowledge through the mazes is the real progress
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.