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
Open-world Stone Age action game about hunting and conquering tribal outposts with tamed beasts.

Execution · Practiced Mastery
Co-op horde shooting that tests sustained aim and defensive setup planning.
Far Cry Primal leans Execution (Practiced Mastery); World War Z: Aftermath 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.
Far Cry Primal
Bow aim, melee timing, beast control under pressure
World War Z: Aftermath
Horde shooting and melee timing carry every swarm
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry Primal
Scripted tribal AI never models the player
World War Z: Aftermath
Zombies are pathfinding scripts, not minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry Primal
Wildlife encounters and patrol spawns are random
World War Z: Aftermath
Spawn director shuffles hordes mildly between runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry Primal
Outpost routes, crafting economy, beast taming order
World War Z: Aftermath
Class builds, defenses and weapon upgrades reward planning
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.