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
An off-road racer testing vehicle control over rough terrain plus freeform route choice.

Execution · Pure Mechanics
Reflex-driven point-to-point racing through heavily scripted setpieces.
1nsane 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.
1nsane
Wrestling physics-heavy trucks over terrain is the core skill
Need for Speed: The Run
Reaction driving through traffic and setpieces is the test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
1nsane
Multiplayer jostling exists but barely rewards prediction
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.
1nsane
Terrain deformation and pile-ups add run noise
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.
1nsane
Line choice and checkpoint routing across open terrain matter
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.