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

Execution · Pure Mechanics
Vehicular twin-stick action testing drive-and-shoot reflexes against scripted swarms.
Half-Life 2 leans Execution (Pure Mechanics); Renegade Ops leans Execution (Pure Mechanics).
Renegade Ops leans a little harder on execution, though the gap is small.
Half-Life 2
Gravity gun and shooting demand precision.
Renegade Ops
Twin-stick driving and aiming under swarms is the whole test
Half-Life 2 leans a little harder on reads, though the gap is small.
Half-Life 2
Combine AI scripted, non-adaptive.
Renegade Ops
Inferno's forces spawn on fixed scripts
Renegade Ops leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Renegade Ops
Pickup drops vary slightly between runs
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Half-Life 2
Linear progression with no builds.
Renegade Ops
Upgrade trees and routes are quickly settled
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.