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 short graphics showcase testing basic shooter execution for twenty minutes.

Execution · Practiced Mastery
An open-world crime game where combat combos and driving skill carry the action.
Half-Life 2: Lost Coast leans Execution (Practiced Mastery); Sleeping Dogs leans Execution (Practiced Mastery).
Sleeping Dogs leans a little harder on execution, though the gap is small.
Half-Life 2: Lost Coast
A short stretch of standard Half-Life 2 gunplay
Sleeping Dogs
brawling and driving need timing/aim
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2: Lost Coast
A handful of scripted Combine soldiers
Sleeping Dogs
scripted enemy AI, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2: Lost Coast
One fixed level with nothing hidden
Sleeping Dogs
minor loot and traffic randomness
Sleeping Dogs leans a little harder on optimization, though the gap is small.
Half-Life 2: Lost Coast
Too brief to develop any systems layer
Sleeping Dogs
upgrade paths and mission routes solvable
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.