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
Tests kart-racing line execution across three vehicle types with item luck on top.

Execution · Pure Mechanics
The bigger, faster sequel doubling down on chaotic crash physics and stunt minigames.
Diddy Kong Racing DS leans Execution (Practiced Mastery); FlatOut 2 leans Execution (Pure Mechanics).
FlatOut 2 leans a little harder on execution, though the gap is small.
Diddy Kong Racing DS
Drift boosting across car, hover and plane handling
FlatOut 2
High-speed control amid wrecks and ragdolls
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Diddy Kong Racing DS
AI rivals are scripted; multiplayer prediction stays shallow
FlatOut 2
No adaptive opposition worth modeling
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Diddy Kong Racing DS
Balloon item pickups swing race positions
FlatOut 2
Crash physics and track debris vary every race
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Diddy Kong Racing DS
Zipper routes and vehicle choice per track are learnable
FlatOut 2
Track knowledge and car tuning settle into routine
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.