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
Accessible kart racing where merging cars trades driving for turret chaos.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Crash Tag Team Racing leans Execution (Practiced Mastery); Grand Theft Auto V 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.
Crash Tag Team Racing
Driving and turret aim ask moderate kid-friendly hands
Grand Theft Auto V
Driving and shooting demand decent inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Tag Team Racing
Clashing with humans adds slight positional guessing
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Crash Tag Team Racing leans a little harder on variance, though the gap is small.
Crash Tag Team Racing
Item luck and clash chaos shake up races
Grand Theft Auto V
Some mission and lobby randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Tag Team Racing
Track routes and car upgrades are quickly learnable
Grand Theft Auto V
Heists, money loops, builds learnable.
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.