head to head
Neither is simply harder - they are hard in different places. Cookie Run: OvenBreak demands more execution; Grand Theft Auto V demands more reads.

Execution · Practiced Mastery
An endless runner testing reaction timing plus character loadout building.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Cookie Run: OvenBreak leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Cookie Run: OvenBreak leans clearly harder on execution.
Cookie Run: OvenBreak
Jump and slide timing decides how far you run
Grand Theft Auto V
Driving and shooting demand decent inputs.
Grand Theft Auto V leans clearly harder on reads.
Cookie Run: OvenBreak
Endless runner, no opponent to model
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Cookie Run: OvenBreak leans a little harder on variance, though the gap is small.
Cookie Run: OvenBreak
Some randomized obstacle and bonus spawns
Grand Theft Auto V
Some mission and lobby randomness.
Cookie Run: OvenBreak leans a little harder on optimization, though the gap is small.
Cookie Run: OvenBreak
Cookie and pet loadout building optimizes scores
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.