Building comparison
head to head
Half-Life 2vsKillzone 3
Killzone 3 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.
Killzone 3
Execution · Pure Mechanics
Heavy first-person gunplay testing aim, with positional prediction in multiplayer.
Half-Life 2 leans Execution (Pure Mechanics); Killzone 3 leans Execution (Pure Mechanics).
Half-Life 2Killzone 3
Axis by axis
Execution6 vs 7
Killzone 3 leans a little harder on execution, though the gap is small.
Half-Life 2
Gravity gun and shooting demand precision.
Killzone 3
Weighty gunplay still demands aim and recoil control
Reads1 vs 4
Killzone 3 leans clearly harder on reads.
Half-Life 2
Combine AI scripted, non-adaptive.
Killzone 3
Multiplayer opponents flank and bait; campaign AI is scripted
Variance1 vs 2
Killzone 3 leans a little harder on variance, though the gap is small.
Half-Life 2
Almost no randomness.
Killzone 3
Spawns and spread inject limited randomness
Optimization3 vs 4
Killzone 3 leans a little harder on optimization, though the gap is small.
Half-Life 2
Linear progression with no builds.
Killzone 3
Map control, loadouts and class roles structure multiplayer
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.