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
Arcade reflexes against memorisable alien swarm patterns built to eat quarters.

Execution · Pure Mechanics
The 70s-cinema getaway driving game with famously demanding physics.
Aliens leans Execution (Pure Mechanics); Driver 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.
Aliens
Arcade dodging and shooting under swarm pressure is the test
Driver
Handbrake control and pursuit driving by feel
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Aliens
Xenomorph waves follow scripted arcade patterns
Driver
Police AI is mappable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Aliens
Stage layouts and spawns are fixed
Driver
Traffic adds mild unpredictability
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Aliens
Learning spawn points and weapon pickups carries credit-saving runs
Driver
City routes and mission tactics learnable
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.