head to head
vs
Risk of RainvsSpelunky Classic
Risk of Rain leans Optimization (Practiced Mastery); Spelunky Classic leans Execution (Twitch Chaos).
Risk of RainSpelunky Classic
Axis by axis
Execution6 vs 7
Spelunky Classic leans harder on execution: precise platforming and combat under pressure
Reads0 vs 1
Spelunky Classic leans harder on reads: no adaptive opponent, monsters are scripted/random
Variance6 vs 7
Spelunky Classic leans harder on variance: procedurally generated levels every run
Optimization7 vs 7
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.