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
A classic dinosaur-hunting FPS with platforming and an arsenal from bow to Chronoscepter.
Half-Life 2 leans Execution (Pure Mechanics); Turok leans Execution (Pure Mechanics).
Turok leans a little harder on execution, though the gap is small.
Half-Life 2
Gravity gun and shooting demand precision.
Turok
Fast aiming and platforming through fog
Half-Life 2 leans a little harder on reads, though the gap is small.
Half-Life 2
Combine AI scripted, non-adaptive.
Turok
Dinosaurs charge on fixed logic
Turok leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Turok
Hidden keys and unseen ambushes initially
Turok leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Turok
Level routes and weapon picks are mappable
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.