head to head
Forza Horizon 5 asks more than Grand Theft Auto: Vice City Stories, and the gap is execution.

Execution · Practiced Mastery
An open-world racer where tuning and racing lines beat the AI field.

Optimization · Practiced Mastery
A PSP-born GTA prequel adding a business empire system to 1984 Vice City.
Forza Horizon 5 leans Execution (Practiced Mastery); Grand Theft Auto: Vice City Stories leans Optimization (Practiced Mastery).
Forza Horizon 5 leans clearly harder on execution.
Forza Horizon 5
Racing line, throttle control, and braking timing matter.
Grand Theft Auto: Vice City Stories
Driving, aiming, and helicopter handling on a stick
Grand Theft Auto: Vice City Stories leans a little harder on reads, though the gap is small.
Forza Horizon 5
AI drivivatars follow fixed patterns; no real adaptation.
Grand Theft Auto: Vice City Stories
Mission enemies are scripted and predictable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Forza Horizon 5
Weather and event roulette add mild randomness.
Grand Theft Auto: Vice City Stories
Mostly fixed missions with light traffic randomness
Forza Horizon 5 leans a little harder on optimization, though the gap is small.
Forza Horizon 5
Car tuning, build choice, and tire compound solve races.
Grand Theft Auto: Vice City Stories
Empire-building business system layers economy onto missions
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.