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

Optimization · Pure Optimization
Optimising a dwarf fortress economy against a randomly generated world.

Optimization · Pure Optimization
An open sandbox where mastering crafting and building systems dominates over any physical skill.
Craft the World leans Optimization (Pure Optimization); Minecraft: Java Edition leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Craft the World
Indirect dwarf orders mean hands barely matter
Minecraft: Java Edition
barely relevant, building/PvP negligible for most
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Craft the World
Monster waves follow predictable scripted triggers
Minecraft: Java Edition
no adaptive opponent, sandbox play
Craft the World leans a little harder on variance, though the gap is small.
Craft the World
Random world generation hides resources until dug out
Minecraft: Java Edition
world gen and mob spawns randomized
Minecraft: Java Edition leans a little harder on optimization, though the gap is small.
Craft the World
Fortress layout, tech tree and crafting chains are the real game
Minecraft: Java Edition
redstone, base/resource routing solvable systems
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.