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 · Pure Optimization
A futuristic city-builder where eco and industrial factions race to settle a flooded Earth.

Optimization · Pure Optimization
The genre-defining cartoon tower defense with crunchy upgrades and fixed waves begging for perfect solutions.
Anno 2070 leans Optimization (Pure Optimization); Kingdom Rush leans Optimization (Pure Optimization).
Kingdom Rush leans a little harder on execution, though the gap is small.
Anno 2070
Building and routing, no reflexes
Kingdom Rush
Light micro of hero and rally points
Anno 2070 leans a little harder on reads, though the gap is small.
Anno 2070
Faction AI is scripted
Kingdom Rush
Wave compositions are fixed and previewable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Anno 2070
Map generation varies resources slightly
Kingdom Rush
Almost fully deterministic waves
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Anno 2070
Eco-versus-industry chains reward exact balancing
Kingdom Rush
Tower placement and upgrade routes 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.