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
A radio-controlled car racer through houses and supermarkets with weapon pickups and hidden shortcuts.
Diddy Kong Racing DS leans Execution (Practiced Mastery); Re-Volt leans Execution (Pure Mechanics).
Re-Volt leans a little harder on execution, though the gap is small.
Diddy Kong Racing DS
Drift boosting across car, hover and plane handling
Re-Volt
Twitchy RC car handling punishes sloppy steering
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
Re-Volt
Multiplayer item duels add a thin mind-game layer
Re-Volt leans a little harder on variance, though the gap is small.
Diddy Kong Racing DS
Balloon item pickups swing race positions
Re-Volt
Random pickups swing race outcomes
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
Re-Volt
Shortcuts and car-class knowledge reward study
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.