head to head
Sea of Stars 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
A retro-styled turn-based RPG about two solstice warriors.
Grand Theft Auto V leans Execution (Practiced Mastery); Sea of Stars leans Optimization (Practiced Mastery).
Grand Theft Auto V leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Sea of Stars
Timed hits demand input precision.
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.
Sea of Stars
Enemies are scripted.
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.
Sea of Stars
Light combat randomness.
Sea of Stars leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
Sea of Stars
Combo and resource planning reward optimization.
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.