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

Optimization · Systems & Chaos
Roguelite city-builder where draws drive each settlement.

Optimization · Systems & Chaos
A deckbuilding roguelike where adapting builds to random offers wins runs.
Against the Storm leans Optimization (Systems & Chaos); Slay the Spire leans Optimization (Systems & Chaos).
Against the Storm leans a little harder on execution, though the gap is small.
Against the Storm
no twitch demand
Slay the Spire
Turn-based, zero input precision required.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Against the Storm
no adaptive opponent
Slay the Spire
Enemy intents shown; behaviour scripted, not adaptive.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Against the Storm
randomized buildings, orders, glades
Slay the Spire
Card and relic offers drive every run.
Slay the Spire leans a little harder on optimization, though the gap is small.
Against the Storm
production chains, order routing solvable
Slay the Spire
Deck shaping and combat math are solvable.
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.