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 classic Contra-style run-and-gun about precise reflexes and firepower.
Driver leans Execution (Pure Mechanics); Operation C leans Execution (Pure Mechanics).
Operation C leans a little harder on execution, though the gap is small.
Driver
Handbrake control and pursuit driving by feel
Operation C
precise run-and-gun reflexes and dodging
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
Operation C
scripted enemy patterns, no adaptation
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
Operation C
minimal randomness
Driver leans a little harder on optimization, though the gap is small.
Driver
City routes and mission tactics learnable
Operation C
weapon pickup routing knowledge
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.