head to head
Horizon Forbidden West asks more than Grand Theft Auto V, and the gap is optimization.

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

Optimization · Practiced Mastery
Expanded machine combat with broader build systems and traversal tools.
Grand Theft Auto V leans Execution (Practiced Mastery); Horizon Forbidden West leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Horizon Forbidden West
Faster combat with valor surges and aiming.
Grand Theft Auto V leans a little harder on reads, though the gap is small.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Horizon Forbidden West
Machines remain scripted, not adaptive.
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.
Horizon Forbidden West
Loot rolls and patrol RNG light.
Horizon Forbidden West leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
Horizon Forbidden West
Deeper gear, weapon techniques, machine weaknesses.
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.