head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
A Himalayan open-world shooter refining the outpost-clearing formula.

Execution · Practiced Mastery
Stylish 60s spy FPS mixing stealth routes, gadgets, and gunfights.
Far Cry 4 leans Execution (Practiced Mastery); No One Lives Forever 2: A Spy in H.A.R.M.'s Way 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.
Far Cry 4
Gunplay plus gyrocopter and elephant chaos
No One Lives Forever 2: A Spy in H.A.R.M.'s Way
Gunplay and stealth timing through guarded levels
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry 4
Scripted outpost AI
No One Lives Forever 2: A Spy in H.A.R.M.'s Way
Guards run scripted patrols and alert states
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry 4
Wildlife and patrol variation
No One Lives Forever 2: A Spy in H.A.R.M.'s Way
First-run patrol uncertainty, then learnable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Far Cry 4
Outpost approaches and skill trees are plannable
No One Lives Forever 2: A Spy in H.A.R.M.'s Way
Gadget use, stealth routing, and skill upgrades
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.