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 · Practiced Mastery
The original top-down crime sandbox where you rack up points causing mayhem across three cities.

Execution · Practiced Mastery
Balancing a physics vehicle over terrain while upgrade math sets your ceiling.
Grand Theft Auto leans Execution (Practiced Mastery); Hill Climb Racing 2 leans Execution (Practiced Mastery).
Hill Climb Racing 2 leans a little harder on execution, though the gap is small.
Grand Theft Auto
Twitchy top-down driving and shooting under police pressure
Hill Climb Racing 2
Throttle-and-brake balance over physics terrain decides every run
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto
Cops follow simple scripts; nothing adapts
Hill Climb Racing 2
Async opponents are ghosts, nothing to predict live
Grand Theft Auto leans a little harder on variance, though the gap is small.
Grand Theft Auto
Chaotic traffic and wanted-level escalation surprise players
Hill Climb Racing 2
Procedural terrain segments add mild run-to-run noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto
Score targets reward learning missions and city layouts
Hill Climb Racing 2
Vehicle choice, tuning and upgrade paths set the ceiling
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.