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
Accessible car control amid demolition chaos rather than precision racing.

Execution · Pure Mechanics
Open-world racer where banking risky speedpoints against human cops drives the tension.
Dirt Showdown leans Execution (Practiced Mastery); Need for Speed: Rivals leans Execution (Pure Mechanics).
Need for Speed: Rivals leans a little harder on execution, though the gap is small.
Dirt Showdown
Drifting, boosting and ramming need solid car control
Need for Speed: Rivals
Open-road control with pursuit tech timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt Showdown
Demolition modes reward predicting human movement a little
Need for Speed: Rivals
AllDrive mixes human cops and racers in
Need for Speed: Rivals leans a little harder on variance, though the gap is small.
Dirt Showdown
Crash physics and pack chaos add randomness
Need for Speed: Rivals
Dynamic open-world encounters and weather
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dirt Showdown
Event types and boost routes are quickly learnable
Need for Speed: Rivals
Risk-versus-bank speedpoint economy
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.