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
A cinematic platformer testing traversal timing through fixed environmental puzzles.

Execution · Practiced Mastery
Linear sci-fi shooting plus spatial puzzles with fixed solutions.
Deadlight leans Execution (Practiced Mastery); Prey 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.
Deadlight
Jump and vault timing under pursuit needs precision
Prey
Standard FPS aim with portal disorientation added
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Deadlight
Shadows mob on simple fixed triggers
Prey
Alien enemies follow fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Deadlight
Linear cinematic levels with nothing random
Prey
Linear campaign with little randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Deadlight
Learning trap layouts and zombie luring solves each screen
Prey
Portal and gravity puzzles have fixed solutions
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.