head to head
Metal Gear Solid 3: Subsistence asks more than Red Dead Redemption 2, and the gap is optimization.

Optimization · Practiced Mastery
Stealth systems mastery against scripted guards with moderate execution needs.

Execution · Practiced Mastery
A cinematic open-world western leaning on shooting feel and atmosphere.
Metal Gear Solid 3: Subsistence leans Optimization (Practiced Mastery); Red Dead Redemption 2 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 3: Subsistence
CQC, aiming and timed escapes demand real but moderate precision
Red Dead Redemption 2
Gunplay and Dead Eye reward aim and timing.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 3: Subsistence
Guards and bosses run rich but ultimately scripted behaviours
Red Dead Redemption 2
Enemies use scripted AI patterns, not adaptation.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 3: Subsistence
Patrols and boss quirks are unknown only until studied
Red Dead Redemption 2
Some hunting and weather randomness, lightly hidden.
Metal Gear Solid 3: Subsistence leans clearly harder on optimization.
Metal Gear Solid 3: Subsistence
Camo, food and route systems reward deep mastery
Red Dead Redemption 2
Loadouts and routes solvable but loose.
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.