head to head
vs
Left 4 Dead 2vsSurviv.io
Left 4 Dead 2 leans Execution (Practiced Mastery); Surviv.io leans Execution (Twitch Chaos).
Left 4 Dead 2Surviv.io
Axis by axis
Execution6 vs 6
Even - both lean on execution about the same.
Reads3 vs 4
Surviv.io leans harder on reads: Human rotations and peek timing shift every match.
Variance5 vs 6
Surviv.io leans harder on variance: Loot rolls and circle placement swing outcomes hard.
Optimization6 vs 4
Left 4 Dead 2 leans harder on optimization: Route knowledge and weapon picks solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.