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

Execution · Pure Mechanics
The 70s-cinema getaway driving game with famously demanding physics.

Execution · Pure Mechanics
Reflex-driven point-to-point racing through heavily scripted setpieces.
Driver leans Execution (Pure Mechanics); Need for Speed: The Run 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.
Driver
Handbrake control and pursuit driving by feel
Need for Speed: The Run
Reaction driving through traffic and setpieces is the test
Need for Speed: The Run leans a little harder on reads, though the gap is small.
Driver
Police AI is mappable
Need for Speed: The Run
Rivals rubber-band on scripts, nothing to out-think
Need for Speed: The Run leans a little harder on variance, though the gap is small.
Driver
Traffic adds mild unpredictability
Need for Speed: The Run
Scripted events surprise once, then are known
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Driver
City routes and mission tactics learnable
Need for Speed: The Run
Checkpoint routes and car choice are quickly solved
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.