head to head
Neither is simply harder - they are hard in different places. Grand Theft Auto V demands more reads; Star Wars: Rogue Squadron demands more execution.

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

Execution · Practiced Mastery
A classic arcade Star Wars flight shooter where gold medals demand clean, fast, memorized runs.
Grand Theft Auto V leans Execution (Practiced Mastery); Star Wars: Rogue Squadron leans Execution (Practiced Mastery).
Star Wars: Rogue Squadron leans clearly harder on execution.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Star Wars: Rogue Squadron
Tight flying and precise blaster aim drive medal runs.
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Star Wars: Rogue Squadron
TIE fighters follow fixed flight scripts.
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Star Wars: Rogue Squadron
Missions are entirely fixed and rememberable.
Star Wars: Rogue Squadron leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
Star Wars: Rogue Squadron
Gold-medal criteria reward optimized routes and target priorities.
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.