head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Practiced Mastery
A PSP-born GTA prequel adding a business empire system to 1984 Vice City.

Execution · Practiced Mastery
id Software's post-apocalyptic shooter mixing crisp gunplay with buggy racing.
Grand Theft Auto: Vice City Stories leans Optimization (Practiced Mastery); Rage leans Execution (Practiced Mastery).
Rage leans a little harder on execution, though the gap is small.
Grand Theft Auto: Vice City Stories
Driving, aiming, and helicopter handling on a stick
Rage
id-style gunplay precision against agile bandits.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: Vice City Stories
Mission enemies are scripted and predictable
Rage
Enemy mobility is scripted animation, not adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: Vice City Stories
Mostly fixed missions with light traffic randomness
Rage
First-run unknowns in dungeons and loot.
Grand Theft Auto: Vice City Stories leans a little harder on optimization, though the gap is small.
Grand Theft Auto: Vice City Stories
Empire-building business system layers economy onto missions
Rage
Crafting, ammo economy, and wingstick usage reward planning.
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.