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
A fast-paced endless runner starring a sliding penguin.

Execution · Pure Mechanics
Reflex-driven point-to-point racing through heavily scripted setpieces.
Faaast Penguin 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.
Faaast Penguin
reaction-based endless runner reflexes
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.
Faaast Penguin
no opponent, solo arcade run
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.
Faaast Penguin
procedural obstacle generation
Need for Speed: The Run
Scripted events surprise once, then are known
Need for Speed: The Run leans a little harder on optimization, though the gap is small.
Faaast Penguin
minor route/timing optimization over runs
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.