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 · Practiced Mastery
A dual-protagonist western shooter testing aim and learned stealth routes through scripted levels.

Execution · Practiced Mastery
Cinematic survival action where scavenged resources and stealth carry you through the apocalypse.
Call of Juarez leans Execution (Practiced Mastery); The Last of Us leans Execution (Practiced Mastery).
Call of Juarez leans a little harder on execution, though the gap is small.
Call of Juarez
Gunplay and whip platforming need steady aim and timing
The Last of Us
Aim, stealth timing, and scarce-ammo combat
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Juarez
Campaign enemies are scripted; multiplayer is an afterthought
The Last of Us
Enemy AI searches but follows mappable routines
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Juarez
Stealth patrols are unknown first time through, then fixed
The Last of Us
Encounter layouts unknown first time only
The Last of Us leans a little harder on optimization, though the gap is small.
Call of Juarez
Learning each chapter's intended approach for both characters
The Last of Us
Resource crafting and encounter routing
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.