head to head
vs
Fire Emblem Fates: BirthrightvsSid Meier's Civilization IV
Fire Emblem Fates: Birthright leans Optimization (Pure Optimization); Sid Meier's Civilization IV leans Optimization (Pure Optimization).
Fire Emblem Fates: BirthrightSid Meier's Civilization IV
Axis by axis
Execution1 vs 0
Fire Emblem Fates: Birthright leans harder on execution: no real-time physical skill, turn-based
Reads1 vs 2
Sid Meier's Civilization IV leans harder on reads: Human multiplayer adds diplomacy reads; AI is mappable
Variance4 vs 4
Even - both lean on variance about the same.
Optimization9 vs 9
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.