Building comparison
head to head
Half-Life 2vsQuake 4
Quake 4 asks more than Half-Life 2, and the gap is reads.
Half-Life 2
Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.
Quake 4
Execution · Pure Mechanics
Fast arena-style shooter mixing a scripted Strogg campaign with twitch multiplayer.
Half-Life 2 leans Execution (Pure Mechanics); Quake 4 leans Execution (Pure Mechanics).
Half-Life 2Quake 4
Axis by axis
Execution6 vs 8
Quake 4 leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Quake 4
Aimbot plus strafe-jump inputs dominate both campaign and multiplayer
Reads1 vs 5
Quake 4 leans clearly harder on reads.
Half-Life 2
Combine AI scripted, non-adaptive.
Quake 4
Multiplayer duels reward predicting human positioning and timing
Variance1 vs 2
Quake 4 leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Quake 4
Spawn and item timing add mild uncertainty
Optimization3 vs 4
Quake 4 leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Quake 4
Item control routes and weapon picks are learnable
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.