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
Beautiful 19th-century city-builder ruled by production ratios.

Optimization · Pure Optimization
Deep tactical build crafting and elemental combo solving across set-piece turn-based encounters.
Anno 1800 leans Optimization (Pure Optimization); Divinity: Original Sin II - Definitive 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.
Anno 1800
pausable, no twitch
Divinity: Original Sin II - Definitive Edition
Turn-based combat removes any physical ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Anno 1800
AI scripted, not adaptive
Divinity: Original Sin II - Definitive Edition
Optional PvP arena aside, AI follows mappable behaviour
Divinity: Original Sin II - Definitive Edition leans a little harder on variance, though the gap is small.
Anno 1800
minor trade fluctuations
Divinity: Original Sin II - Definitive Edition
Initiative rolls, random loot and unknown encounters add spice
Anno 1800 leans a little harder on optimization, though the gap is small.
Anno 1800
supply chains and ratios are the game
Divinity: Original Sin II - Definitive Edition
Build synergies, surface combos and positioning are deeply 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.