head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Practiced Mastery
An open-world racer where vehicle handling across multiple disciplines carries the challenge.

Execution · Practiced Mastery
Cartoon kart racing where lines and shortcuts beat the gimmick weapons.
The Crew 2 leans Execution (Practiced Mastery); Wacky Races leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
The Crew 2
precise driving/flying/boating control
Wacky Races
Kart handling and drift lines decide finishing position
Wacky Races leans a little harder on reads, though the gap is small.
The Crew 2
AI racers scripted, no adaptation
Wacky Races
AI racers rubber-band by script, not by reading you
Wacky Races leans a little harder on variance, though the gap is small.
The Crew 2
weather and traffic add randomness
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.
The Crew 2
vehicle tuning and routes solvable
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.