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
A survival horror shooter aboard a storm-tossed whaler where the rolling deck fights your aim as much as the parasites do.

Execution · Practiced Mastery
Open-world western about an outlaw forced to hunt down his old gang.
Cold Fear leans Execution (Practiced Mastery); Red Dead Redemption leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Cold Fear
Aiming on a storm-rocked ship deck is the signature test
Red Dead Redemption
Dead Eye softens but gunplay still wants aim
Red Dead Redemption leans a little harder on reads, though the gap is small.
Cold Fear
Exocels and mercenaries run fixed AI scripts
Red Dead Redemption
Multiplayer skirmishes add light human prediction
Cold Fear leans a little harder on variance, though the gap is small.
Cold Fear
Some unknown ambushes on a first playthrough
Red Dead Redemption
Ambient events and spawns vary mildly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Cold Fear
Weak-point targeting and ammo economy reward learned play
Red Dead Redemption
Mission approaches and economy are learnable
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.