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
Reflex-driven point-to-point racing through heavily scripted setpieces.

Execution · Pure Mechanics
A career-driven racing game blending story missions with circuit racing.
Need for Speed: The Run leans Execution (Pure Mechanics); Pro Race 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.
Need for Speed: The Run
Reaction driving through traffic and setpieces is the test
Pro Race Driver
precise cornering and braking control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Need for Speed: The Run
Rivals rubber-band on scripts, nothing to out-think
Pro Race Driver
AI racers don't truly adapt to player
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Need for Speed: The Run
Scripted events surprise once, then are known
Pro Race Driver
some randomness in AI mistakes/weather
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Need for Speed: The Run
Checkpoint routes and car choice are quickly solved
Pro Race Driver
car setup and racing line 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.