head to head
DCS World asks more than Grand Theft Auto V, and the gap is optimization.

Optimization · Practiced Mastery
A study-level combat flight sim where mastering each aircraft's real systems is the price of entry.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
DCS World leans Optimization (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
DCS World leans clearly harder on execution.
DCS World
Precise stick-and-throttle handling and BFM have a high ceiling.
Grand Theft Auto V
Driving and shooting demand decent inputs.
DCS World leans clearly harder on reads.
DCS World
Multiplayer dogfights against humans reward genuine prediction.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
DCS World leans a little harder on variance, though the gap is small.
DCS World
Sensor fog of war and unseen contacts hide information.
Grand Theft Auto V
Some mission and lobby randomness.
DCS World leans clearly harder on optimization.
DCS World
Full-fidelity avionics, weapons and tactics are a vast learnable system.
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.