head to head
Neither is simply harder - they are hard in different places. Portal 2 demands more execution; Urban Empire demands more variance.

Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.

Optimization · Pure Optimization
Tests long-horizon planning of city economics and mappable political systems.
Portal 2 leans Optimization (Pure Optimization); Urban Empire leans Optimization (Pure Optimization).
Portal 2 leans clearly harder on execution.
Portal 2
Portal placement requires some precision but timing is lenient.
Urban Empire
Menu-driven city management, no twitch component
Urban Empire leans a little harder on reads, though the gap is small.
Portal 2
No opponent; puzzles are static.
Urban Empire
Council AI votes by mappable rules, not adaptive scheming
Urban Empire leans clearly harder on variance.
Portal 2
Puzzles are deterministic with no randomness.
Urban Empire
Historical events and council moods are hidden until learned
Portal 2 leans a little harder on optimization, though the gap is small.
Portal 2
Solving the puzzle's logic IS the entire game.
Urban Empire
Budget, district planning and political math are 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.