head to head
Grand Theft Auto V asks more than Pony Island, and the gap is execution.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.

Optimization · Practiced Mastery
A meta puzzle box testing curiosity and one-time discovery more than any repeatable skill.
Grand Theft Auto V leans Execution (Practiced Mastery); Pony Island leans Optimization (Practiced Mastery).
Grand Theft Auto V leans clearly harder on execution.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Pony Island
Light arcade hopping segments with low demands
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Pony Island
The devil's tricks are authored scripts, not adaptation
Pony Island leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Pony Island
Meta twists are hidden information that spend on first reveal
Pony Island leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Pony Island
Code-tinkering puzzles have fixed discoverable solutions
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.