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

Optimization · Pure Optimization
An economy and layout optimization puzzle about keeping a small simulated city solvent.
Anno 2070 leans Optimization (Pure Optimization); SimCity 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 2070
Building and routing, no reflexes
SimCity
Pause-friendly building removes any physical test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Anno 2070
Faction AI is scripted
SimCity
Region multiplayer is cooperative, not adversarial prediction
SimCity leans a little harder on variance, though the gap is small.
Anno 2070
Map generation varies resources slightly
SimCity
Disasters and agent simulation quirks add mild randomness
Anno 2070 leans a little harder on optimization, though the gap is small.
Anno 2070
Eco-versus-industry chains reward exact balancing
SimCity
Zoning, traffic flow and specialisation economies are the whole game
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.