head to head
vs
SpelunkyvsSundered
Spelunky leans Execution (Twitch Chaos); Sundered leans Execution (Twitch Chaos).
SpelunkySundered
Axis by axis
Execution8 vs 7
Spelunky leans harder on execution: Tight platforming and whip control under constant threat.
Reads1 vs 0
Spelunky leans harder on reads: Enemy AI is scripted; no adaptive opponents.
Variance7 vs 6
Spelunky leans harder on variance: Procedural caves and item rolls shape every run.
Optimization6 vs 6
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.