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

Execution · Pure Mechanics
A top-down zombie shooter testing aim and survival against waves in the dark.

Execution · Pure Mechanics
A radio-controlled car racer through houses and supermarkets with weapon pickups and hidden shortcuts.
Blackout Z: Slaughterhouse Edition leans Execution (Pure Mechanics); Re-Volt leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Blackout Z: Slaughterhouse Edition
Twin-stick aim and movement under a draining flashlight
Re-Volt
Twitchy RC car handling punishes sloppy steering
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Blackout Z: Slaughterhouse Edition
Zombies swarm on scripts, no prediction
Re-Volt
Multiplayer item duels add a thin mind-game layer
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Blackout Z: Slaughterhouse Edition
Spawn waves and pickups vary each run
Re-Volt
Random pickups swing race outcomes
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Blackout Z: Slaughterhouse Edition
Battery and ammo management reward efficient play
Re-Volt
Shortcuts and car-class knowledge reward study
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.