head to head
Metal Gear Solid 3: Snake Eater 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
Learning fixed boss patterns and managing survival systems through a linear jungle infiltration.
Grand Theft Auto V leans Execution (Practiced Mastery); Metal Gear Solid 3: Snake Eater leans Optimization (Practiced Mastery).
Metal Gear Solid 3: Snake Eater leans a little harder on execution, though the gap is small.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Metal Gear Solid 3: Snake Eater
CQC execution, camouflage switching speed, and boss timing are demanding
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.
Metal Gear Solid 3: Snake Eater
The Cobra unit fights with scripted abilities; no real-time player profiling
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.
Metal Gear Solid 3: Snake Eater
Camouflage index and food supply introduce hidden-state management
Metal Gear Solid 3: Snake Eater leans clearly harder on optimization.
Grand Theft Auto V
Heists, money loops, builds learnable.
Metal Gear Solid 3: Snake Eater
Camo pattern matching and boss moveset mastery are fully 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.