head to head
Grand Theft Auto V asks more than Fable: The Lost Chapters, and the gap is execution.

Optimization · Practiced Mastery
A forgiving fantasy RPG testing light build and morality-system optimization.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Fable: The Lost Chapters leans Optimization (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Grand Theft Auto V leans clearly harder on execution.
Fable: The Lost Chapters
Forgiving combat needs little precision
Grand Theft Auto V
Driving and shooting demand decent inputs.
Grand Theft Auto V leans clearly harder on reads.
Fable: The Lost Chapters
Enemies and villagers run simple scripts
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Fable: The Lost Chapters
The authored world holds few surprises after one pass
Grand Theft Auto V
Some mission and lobby randomness.
Fable: The Lost Chapters leans a little harder on optimization, though the gap is small.
Fable: The Lost Chapters
Alignment, builds and economy are a gentle solvable layer
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.