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

Execution · Practiced Mastery
Soft-body physics sandbox driving and crashing.

Execution · Twitch Chaos
A kart racer with random items and drift timing on themed circuits.
BeamNG.drive leans Execution (Practiced Mastery); Cartoon Network Racing leans Execution (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
BeamNG.drive
Soft-body physics car control
Cartoon Network Racing
Steering, drifting and item timing decide races
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
BeamNG.drive
Mostly sandbox, no adaptive opponents
Cartoon Network Racing
AI racers scripted, no adaptive prediction
Cartoon Network Racing leans a little harder on variance, though the gap is small.
BeamNG.drive
Emergent crash physics outcomes
Cartoon Network Racing
Random item pickups swing race outcomes
BeamNG.drive leans a little harder on optimization, though the gap is small.
BeamNG.drive
Vehicle tuning, scenario routing
Cartoon Network Racing
Shortcuts and item use reward track knowledge
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.