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
The 70s-cinema getaway driving game with famously demanding physics.

Execution · Pure Mechanics
A deterministic scrolling gauntlet testing sustained reflex precision and fuel pacing.
Driver leans Execution (Pure Mechanics); River Raid leans Execution (Pure Mechanics).
River Raid leans a little harder on execution, though the gap is small.
Driver
Handbrake control and pursuit driving by feel
River Raid
Threading the narrowing river while managing fuel is pure reflex
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Driver
Police AI is mappable
River Raid
Enemy craft follow simple fixed movements
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Driver
Traffic adds mild unpredictability
River Raid
The river layout is deterministic and memorisable
Driver leans a little harder on optimization, though the gap is small.
Driver
City routes and mission tactics learnable
River Raid
Fuel-stop pacing and section memory extend runs
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.