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
Robot-dinosaur hunting that rewards weak-point study and ranged precision.

Execution · Practiced Mastery
Tests cautious route planning and scavenged-resource management through hostile zones.
Horizon Zero Dawn leans Execution (Practiced Mastery); Left Alive 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.
Horizon Zero Dawn
Bow aiming and dodge timing matter.
Left Alive
Clunky shooting and stealth still demand careful manual play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Horizon Zero Dawn
Machines follow fixed patterns, not adapting.
Left Alive
Enemy patrols run fixed detection scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Horizon Zero Dawn
Some loot and patrol randomness.
Left Alive
Patrol layouts are unknown on first approach
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Horizon Zero Dawn
Weak points, traps, builds fully solvable.
Left Alive
Crafting, routing and survivor choices reward planning over reflexes
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.