head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
The 1992 template for the entire real-time strategy genre.

Optimization · Pure Optimization
An open sandbox where mastering crafting and building systems dominates over any physical skill.
Dune II 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.
Dune II
Slow clicking, no precision demands
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.
Dune II
AI attacks on predictable timers
Minecraft: Java Edition
no adaptive opponent, sandbox play
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dune II
Unscouted map and spice fields early
Minecraft: Java Edition
world gen and mob spawns randomized
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dune II
Build orders and base economy decide everything
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.