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 linear western shooter testing aim and learned encounter pacing through scripted set pieces.

Execution · Pure Mechanics
VR Half-Life where hand-presence interaction defines every fight.
Call of Juarez: Bound In Blood leans Execution (Practiced Mastery); Half-Life: Alyx leans Execution (Pure Mechanics).
Half-Life: Alyx leans a little harder on execution, though the gap is small.
Call of Juarez: Bound In Blood
Aimbot would trivialise the gunfights and showdown duels
Half-Life: Alyx
VR aim, reload, and grab inputs intense.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Juarez: Bound In Blood
Scripted campaign enemies; thin multiplayer adds little prediction
Half-Life: Alyx
Combine and headcrabs scripted.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of Juarez: Bound In Blood
Encounter layouts are unknown on first run, then fixed
Half-Life: Alyx
Resource and encounter variance light.
Call of Juarez: Bound In Blood leans a little harder on optimization, though the gap is small.
Call of Juarez: Bound In Blood
Cover routes and concentration-mode usage are learnable patterns
Half-Life: Alyx
Few systems to tune.
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.