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
A radio-controlled car racer through houses and supermarkets with weapon pickups and hidden shortcuts.

Execution · Practiced Mastery
Cartoon kart racing where lines and shortcuts beat the gimmick weapons.
Re-Volt leans Execution (Pure Mechanics); Wacky Races leans Execution (Practiced Mastery).
Re-Volt leans a little harder on execution, though the gap is small.
Re-Volt
Twitchy RC car handling punishes sloppy steering
Wacky Races
Kart handling and drift lines decide finishing position
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Re-Volt
Multiplayer item duels add a thin mind-game layer
Wacky Races
AI racers rubber-band by script, not by reading you
Re-Volt leans a little harder on variance, though the gap is small.
Re-Volt
Random pickups swing race outcomes
Wacky Races
Item-style dirty tricks inject mid-race chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Re-Volt
Shortcuts and car-class knowledge reward study
Wacky Races
Track shortcuts and character stats 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.