head to head
vs
Half-Life Deathmatch: SourcevsKillzone 2
Half-Life Deathmatch: Source leans Execution (Pure Mechanics); Killzone 2 leans Execution (Pure Mechanics).
Half-Life Deathmatch: SourceKillzone 2
Axis by axis
Execution8 vs 8
Even - both lean on execution about the same.
Reads4 vs 4
Even - both lean on reads about the same.
Variance1 vs 2
Killzone 2 leans harder on variance: Modest spawn and objective rotation noise
Optimization4 vs 4
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.