head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Mind & Math
The original historical RTS of advancing ages, booming economies, and rushing armies.

Optimization · Mind & Math
An RTS where Greek, Norse, and Egyptian pantheons lend myth units and god powers to war.
Age of Empires leans Optimization (Mind & Math); Age of Mythology leans Optimization (Mind & Math).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires
APM and micro under pressure
Age of Mythology
Standard RTS micro demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires
Scouting and countering human strategies
Age of Mythology
Human opponents and god-power timing bluffs
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires
Fog of war and map resources
Age of Mythology
Fog of war and random maps
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires
Build orders and eco timing dominate
Age of Mythology
God choices and favor economy reward planning
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.