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

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

Optimization · Practiced Mastery
FPS scenarios converted into solvable sequencing puzzles by stopped time.
Metal Gear Solid 3: Subsistence leans Optimization (Practiced Mastery); SuperHot 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
SuperHot
Time-stops-when-you-stop removes most twitch pressure
Metal Gear Solid 3: Subsistence leans a little harder on reads, though the gap is small.
Metal Gear Solid 3: Subsistence
Guards and bosses run rich but ultimately scripted behaviours
SuperHot
Red guys follow spawn scripts, not minds
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
SuperHot
Spawn order is unknown on a first attempt only
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 3: Subsistence
Camo, food and route systems reward deep mastery
SuperHot
Each level is a solvable movement-and-kill-order puzzle
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.