head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
A percussive top-down rampage where a gorilla smashes through procedurally remixed levels.

Execution · Twitch Chaos
One-touch reflex timing against procedurally generated obstacle streams.
Ape Out leans Execution (Pure Mechanics); Zombie Tsunami leans Execution (Twitch Chaos).
Ape Out leans a little harder on execution, though the gap is small.
Ape Out
Split-second grabs and throws under fire
Zombie Tsunami
One-touch jump timing for a growing horde is the whole test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Ape Out
Guards react predictably
Zombie Tsunami
No opponent - obstacles are procedural
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Ape Out
Procedurally shuffled layouts and enemy placements
Zombie Tsunami
Procedural level generation decides what each run offers
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Ape Out
Few systems beyond momentum and angles
Zombie Tsunami
Upgrade spending is a thin meta layer
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.