head to head
Ace Combat 7: Skies Unknown asks more than Grand Theft Auto V, and the gap is execution.

Execution · Practiced Mastery
A modern arcade flight game of high-speed dogfights, drones, and dramatic canyon runs.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Ace Combat 7: Skies Unknown leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Ace Combat 7: Skies Unknown leans clearly harder on execution.
Ace Combat 7: Skies Unknown
Tight dogfighting and missile-dodge timing
Grand Theft Auto V
Driving and shooting demand decent inputs.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Ace Combat 7: Skies Unknown
Campaign AI scripted; small PvP scene adds little
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.
Ace Combat 7: Skies Unknown
Cloud cover gimmicks are learnable
Grand Theft Auto V
Some mission and lobby randomness.
Ace Combat 7: Skies Unknown leans a little harder on optimization, though the gap is small.
Ace Combat 7: Skies Unknown
Aircraft tree and loadout routing matter
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.