head to head
vs
Killing Floor 2vsLeft 4 Dead
Killing Floor 2 leans Execution (Practiced Mastery); Left 4 Dead leans Execution (Twitch Chaos).
Killing Floor 2Left 4 Dead
Axis by axis
Execution7 vs 7
Even - both lean on execution about the same.
Reads1 vs 2
Left 4 Dead leans harder on reads: Versus mode adds human ambush mindgames
Variance5 vs 5
Even - both lean on variance about the same.
Optimization7 vs 5
Killing Floor 2 leans harder on optimization: Perks, weapon synergies, money management
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.