head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

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

Optimization · Practiced Mastery
A tactical police shooter where careful, methodical tactics against randomized threats defines mastery.
Metal Gear Solid 3: Subsistence leans Optimization (Practiced Mastery); SWAT 4 leans Optimization (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
SWAT 4
precise aim and careful movement required
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
SWAT 4
suspects react but don't truly adapt
SWAT 4 leans a little harder on variance, though the gap is small.
Metal Gear Solid 3: Subsistence
Patrols and boss quirks are unknown only until studied
SWAT 4
suspect placement and behavior randomized
Metal Gear Solid 3: Subsistence leans a little harder on optimization, though the gap is small.
Metal Gear Solid 3: Subsistence
Camo, food and route systems reward deep mastery
SWAT 4
tactics and equipment loadouts solvable
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.