Building comparison
head to head
Europa Universalis IVvsPortal
Neither is simply harder - they are hard in different places. Europa Universalis IV demands more reads; Portal demands more execution.
Europa Universalis IV
Optimization · Pure Optimization
Map-painting grand strategy ruled by mana and idea optimization.
Portal
Optimization · Pure Optimization
The portal-gun puzzle game whose solutions are everything.
Europa Universalis IV leans Optimization (Pure Optimization); Portal leans Optimization (Pure Optimization).
Europa Universalis IVPortal
Axis by axis
Execution2 vs 4
Portal leans clearly harder on execution.
Europa Universalis IV
pausable, no twitch
Portal
Portal placement timing modest.
Reads3 vs 0
Europa Universalis IV leans clearly harder on reads.
Europa Universalis IV
AI mostly scripted, some MP
Portal
No adversary modeling player.
Variance3 vs 0
Europa Universalis IV leans clearly harder on variance.
Europa Universalis IV
events, mission paths
Portal
Deterministic chambers; no randomness.
Optimization9 vs 8
Europa Universalis IV leans a little harder on optimization, though the gap is small.
Europa Universalis IV
idea groups, economy, mana spending
Portal
Pure puzzle-solving optimization.
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.