head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Twitch Chaos
Kiting hordes through procedural floors while building around random loot.

Variance · Twitch Chaos
A brutal survival platformer where you are prey in a living, indifferent ecosystem.
Dungeon Souls leans Execution (Twitch Chaos); Rain World leans Variance (Twitch Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeon Souls
Dodging dense enemy hordes demands constant kiting
Rain World
Momentum-based movement and spear throws are slippery and demanding
Rain World leans a little harder on reads, though the gap is small.
Dungeon Souls
Monsters swarm by script, not strategy
Rain World
Predator AI is dynamic simulation, not modeling of you
Rain World leans a little harder on variance, though the gap is small.
Dungeon Souls
Procedural floors and random loot reshape every run
Rain World
Creature placement and behavior shift unpredictably each cycle
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dungeon Souls
Character builds and unlock knowledge converge with experience
Rain World
Route knowledge and ecosystem mastery slowly tame the chaos
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.