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
A grand strategy wargame about economy, diplomacy, and conquest across history.

Optimization · Pure Optimization
A turn-based strategy game where building the optimal army and economy decides victory.
Age of History III leans Optimization (Pure Optimization); Heroes of Might and Magic IV 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 History III
Map clicks need no timing or twitch
Heroes of Might and Magic IV
no real-time physical skill needed
Age of History III leans a little harder on reads, though the gap is small.
Age of History III
AI nations follow doctrine; humans can adapt
Heroes of Might and Magic IV
predicting human opponent strategy in PvP
Heroes of Might and Magic IV leans a little harder on variance, though the gap is small.
Age of History III
Battle outcomes and events add some chance
Heroes of Might and Magic IV
combat rolls and map resources random
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Age of History III
Economy, diplomacy and conquest planning are the whole game
Heroes of Might and Magic IV
army building and economy near-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.