head to head
vs
Helldivers 2vsLeft 4 Dead
Helldivers 2 leans Optimization (Practiced Mastery); Left 4 Dead leans Execution (Twitch Chaos).
Helldivers 2Left 4 Dead
Axis by axis
Execution6 vs 7
Left 4 Dead leans harder on execution: Headshots, melee shoves, and special-infected reaction time
Reads2 vs 2
Even - both lean on reads about the same.
Variance6 vs 5
Helldivers 2 leans harder on variance: Patrol spawns and modifiers shake missions
Optimization7 vs 5
Helldivers 2 leans harder on optimization: Loadout and stratagem synergies deep
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.