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
Optimising colonial economy and revolution timing on an unknown map.
Fire Emblem Fates: Birthright leans Optimization (Pure Optimization); Sid Meier's Civilization IV: Colonization leans Optimization (Pure Optimization).
Fire Emblem Fates: Birthright leans a little harder on execution, though the gap is small.
Fire Emblem Fates: Birthright
no real-time physical skill, turn-based
Sid Meier's Civilization IV: Colonization
Turn-based clicks - no physical layer
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Fates: Birthright
AI is scripted, no true adaptation
Sid Meier's Civilization IV: Colonization
AI rivals follow mappable tendencies
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Fates: Birthright
hit chance rolls are heavily randomized
Sid Meier's Civilization IV: Colonization
Map generation and exploration hide early information
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fire Emblem Fates: Birthright
permadeath tactics and builds near-solvable
Sid Meier's Civilization IV: Colonization
Colony economy, specialists and independence timing are deeply 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.
full breakdown
Fire Emblem Fates: Birthright →
full breakdown
Sid Meier's Civilization IV: Colonization →