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.

Execution · Pure Mechanics
Routine shooter aim through scripted cartel firefights.

Execution · Practiced Mastery
Cinematic treasure-hunting where set pieces outshine systems.
Call of Juarez: The Cartel leans Execution (Pure Mechanics); Uncharted 4: A Thief's End leans Execution (Practiced Mastery).
Call of Juarez: The Cartel leans a little harder on execution, though the gap is small.
Call of Juarez: The Cartel
Standard FPS gunfights run on aim alone
Uncharted 4: A Thief's End
Cover shooting and platforming reward timing.
Call of Juarez: The Cartel leans a little harder on reads, though the gap is small.
Call of Juarez: The Cartel
Co-op secret objectives add mild teammate suspicion
Uncharted 4: A Thief's End
Scripted enemy AI throughout.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Juarez: The Cartel
Enemy waves spawn identically each run
Uncharted 4: A Thief's End
Essentially no randomness.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Juarez: The Cartel
Weapon levelling is a thin progression layer
Uncharted 4: A Thief's End
Few systems to optimize beyond difficulty.
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.