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.

Execution · Practiced Mastery
Open-world western about an outlaw forced to hunt down his old gang.

Optimization · Practiced Mastery
An open-world action game about blowing up Nazi installations across a stylized black-and-white Paris.
Red Dead Redemption leans Execution (Practiced Mastery); The Saboteur 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.
Red Dead Redemption
Dead Eye softens but gunplay still wants aim
The Saboteur
Climbing, driving and shootouts need moderate dexterity
Red Dead Redemption leans a little harder on reads, though the gap is small.
Red Dead Redemption
Multiplayer skirmishes add light human prediction
The Saboteur
Nazi alarm AI follows predictable suspicion rules
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Red Dead Redemption
Ambient events and spawns vary mildly
The Saboteur
Patrols vary slightly across the open city
The Saboteur leans a little harder on optimization, though the gap is small.
Red Dead Redemption
Mission approaches and economy are learnable
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.