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 tactical RPG where careful positioning and managing randomized combat odds decides survival.

Optimization · Pure Optimization
Deep empire optimisation over a hidden map against mappable AI.
Fire Emblem leans Optimization (Pure Optimization); Sid Meier's Civilization IV leans Optimization (Pure Optimization).
Fire Emblem leans a little harder on execution, though the gap is small.
Fire Emblem
no real-time physical skill, turn-based
Sid Meier's Civilization IV
Turn-based clicks have no physical ceiling
Sid Meier's Civilization IV leans a little harder on reads, though the gap is small.
Fire Emblem
AI is scripted, no true adaptation
Sid Meier's Civilization IV
Human multiplayer adds diplomacy reads; AI is mappable
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem
hit chance rolls are heavily randomized
Sid Meier's Civilization IV
Map generation and unrevealed terrain drive early decisions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem
permadeath tactics and builds near-solvable
Sid Meier's Civilization IV
Tech paths, tile yields and expansion math dominate outcomes
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.