head to head
Lies of P asks more than Half-Life 2, and the gap is execution.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
A demanding souls-like won by perfect-guard timing and weapon assembly.
Half-Life 2 leans Execution (Pure Mechanics); Lies of P leans Execution (Pure Mechanics).
Lies of P leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Lies of P
Perfect-guard timing window punishes errors
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Combine AI scripted, non-adaptive.
Lies of P
Scripted bosses, 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
Almost no randomness.
Lies of P
Minor weapon assembly variance
Lies of P leans clearly harder on optimization.
Half-Life 2
Linear progression with no builds.
Lies of P
Weapon assembly and P-organ builds 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.