head to head
vs
Day of DefeatvsKillzone 2
Day of Defeat leans Execution (Competitive PvP); Killzone 2 leans Execution (Pure Mechanics).
Day of DefeatKillzone 2
Axis by axis
Execution7 vs 8
Killzone 2 leans harder on execution: Weighty gunplay punishes imprecise aim hard
Reads5 vs 4
Day of Defeat leans harder on reads: human teams feint and rotate around objectives
Variance2 vs 2
Even - both lean on variance about the same.
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.