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 under pursuit pressure plus memorising city routes mission by mission.

Execution · Practiced Mastery
Arcade car control at speed over memorised tracks with scripted police pressure.
Driver 2: Back on the Streets leans Execution (Practiced Mastery); Need for Speed: Hot Pursuit 2 leans Execution (Practiced Mastery).
Need for Speed: Hot Pursuit 2 leans a little harder on execution, though the gap is small.
Driver 2: Back on the Streets
Wrestling the car physics through chase missions is the test
Need for Speed: Hot Pursuit 2
High-speed cornering and traffic dodging are the whole test
Need for Speed: Hot Pursuit 2 leans a little harder on reads, though the gap is small.
Driver 2: Back on the Streets
Police AI follows fixed pursuit logic, not adaptation
Need for Speed: Hot Pursuit 2
AI racers and cops follow rubber-band scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Driver 2: Back on the Streets
Traffic placement adds run-to-run noise in chases
Need for Speed: Hot Pursuit 2
Cop spawns and traffic add mild run-to-run noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Driver 2: Back on the Streets
Learning city layouts and mission routes carries completion
Need for Speed: Hot Pursuit 2
Track knowledge and racing lines are learnable and fixed
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.