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 · Practiced Mastery
Managing a cult's economy and rituals between light roguelike combat runs.

Optimization · Pure Optimization
Side-on turn-based tactics where you manually aim ricocheting bullets for a steambot pirate crew.
Cult of the Lamb: Cultist Edition leans Optimization (Practiced Mastery); SteamWorld Heist leans Optimization (Pure Optimization).
Cult of the Lamb: Cultist Edition leans a little harder on execution, though the gap is small.
Cult of the Lamb: Cultist Edition
Dodge-roll combat matters but stays forgiving
SteamWorld Heist
Manual aim and ricochet shots reward steady hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cult of the Lamb: Cultist Edition
Enemies and bosses are scripted, never adaptive
SteamWorld Heist
Enemy bots follow fixed behaviors
Cult of the Lamb: Cultist Edition leans a little harder on variance, though the gap is small.
Cult of the Lamb: Cultist Edition
Weapon, curse and dungeon rolls vary each crusade
SteamWorld Heist
Procedural ship layouts and loot drops
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Cult of the Lamb: Cultist Edition
Cult economy, follower loops and doctrine planning dominate
SteamWorld Heist
Crew builds, weapon picks, and turn routing carry runs
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.