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 · Pure Mechanics
The bigger, faster sequel doubling down on chaotic crash physics and stunt minigames.

Execution · Practiced Mastery
Arcade driving gated by a randomised upgrade-card progression economy.
FlatOut 2 leans Execution (Pure Mechanics); Need for Speed: Payback leans Execution (Practiced Mastery).
FlatOut 2 leans a little harder on execution, though the gap is small.
FlatOut 2
High-speed control amid wrecks and ragdolls
Need for Speed: Payback
Arcade handling and chase setpieces need decent hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FlatOut 2
No adaptive opposition worth modeling
Need for Speed: Payback
Cops and rivals run scripted pursuit logic
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
FlatOut 2
Crash physics and track debris vary every race
Need for Speed: Payback
Speed-card upgrade rolls gate progression randomly
Need for Speed: Payback leans a little harder on optimization, though the gap is small.
FlatOut 2
Track knowledge and car tuning settle into routine
Need for Speed: Payback
Grinding efficient builds and routes is the systems layer
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.