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
Landmark scripted FPS following Gordon Freeman through the Black Mesa disaster.

Execution · Practiced Mastery
A stylised quad-wielding FPS where guns and demon arms tear through a cult hunting your power.
Half-Life leans Execution (Practiced Mastery); The Darkness II 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.
Half-Life
Combat aim and infamous platforming sections
The Darkness II
Quad-wielding guns and demon arms at once tests coordination
The Darkness II leans a little harder on reads, though the gap is small.
Half-Life
Marines flank by script, not by modelling you
The Darkness II
Brotherhood enemies attack on fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life
Set pieces surprise only on first run
The Darkness II
Encounters and light placement are static
Half-Life leans a little harder on optimization, though the gap is small.
Half-Life
Resource routing and encounter knowledge for speedruns
The Darkness II
Talent tree and execution-move choices reward planning
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.