head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Pure Optimization
Stacking tome and trait combinations across procedurally generated worlds with faction-wide consequences.

Optimization · Pure Optimization
Optimizing pair-up chains and offspring builds to steamroll deterministically scripted maps.
Age of Wonders 4 leans Optimization (Pure Optimization); Fire Emblem Fates leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Wonders 4
All decisions are turn-based; nothing physical
Fire Emblem Fates
Turn-based menu play; no hand-speed demands
Age of Wonders 4 leans a little harder on reads, though the gap is small.
Age of Wonders 4
AI rulers use scripted tomes and no real player modelling
Fire Emblem Fates
AI follows scripted attack priorities, not player modeling
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Wonders 4
Procedural world generation and tome discovery add hidden layers
Fire Emblem Fates
Dual-strike/guard procs and hit rates inject meaningful RNG
Age of Wonders 4 leans a little harder on optimization, though the gap is small.
Age of Wonders 4
Tome selection and trait stacking create a vast combinatorial optimization space
Fire Emblem Fates
Offspring seals, asset/flaw selection, and supports are deeply planned
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.