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 · Practiced Mastery
Car-control execution through scripted chase missions and learned city routes.

Execution · Pure Mechanics
Reflex-driven point-to-point racing through heavily scripted setpieces.
Driver: Parallel Lines leans Execution (Practiced Mastery); Need for Speed: The Run leans Execution (Pure Mechanics).
Need for Speed: The Run leans a little harder on execution, though the gap is small.
Driver: Parallel Lines
Chase driving and tight escapes demand solid car control
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: Parallel Lines
Police AI follows predictable scripted pursuit logic
Need for Speed: The Run
Rivals rubber-band on scripts, nothing to out-think
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Driver: Parallel Lines
Traffic adds light noise to chases
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: Parallel Lines
Route knowledge and car upgrades smooth missions
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.