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

Optimization · Practiced Mastery
A stealth-action game where planning routes past scripted guards is the deep skill.

Optimization · Practiced Mastery
An open-world action game about blowing up Nazi installations across a stylized black-and-white Paris.
Metal Gear Solid 2: Substance leans Optimization (Practiced Mastery); The Saboteur leans Optimization (Practiced Mastery).
The Saboteur leans a little harder on execution, though the gap is small.
Metal Gear Solid 2: Substance
stealth timing and aim matter
The Saboteur
Climbing, driving and shootouts need moderate dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 2: Substance
guards are scripted, no adaptation
The Saboteur
Nazi alarm AI follows predictable suspicion rules
The Saboteur leans a little harder on variance, though the gap is small.
Metal Gear Solid 2: Substance
minor patrol randomness
The Saboteur
Patrols vary slightly across the open city
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Metal Gear Solid 2: Substance
stealth routes and gadgets solvable
The Saboteur
Plotting demolition targets and escape routes is the game
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.