head to head
Grand Theft Auto V asks more than Moons of Madness, and the gap is execution.

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

Optimization · Practiced Mastery
Scripted cosmic-horror set pieces strung between modest environmental puzzles.
Grand Theft Auto V leans Execution (Practiced Mastery); Moons of Madness leans Optimization (Practiced Mastery).
Grand Theft Auto V leans clearly harder on execution.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Moons of Madness
Light stealth and walking - minimal physical demand
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Moons of Madness
Horrors trigger on scripted story beats, never adapting
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Some mission and lobby randomness.
Moons of Madness
Scares and puzzle layouts are unknown only once
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Heists, money loops, builds learnable.
Moons of Madness
Environmental puzzles are the only real test, and modest
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.