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 · Mind & Math
A colonial-era RTS adding home-city card shipments to classic Age economy play.

Optimization · Mind & Math
The pioneering sandbox MMORPG of player economies, housing, and open PvP.
Age of Empires III leans Optimization (Mind & Math); Ultima Online leans Optimization (Mind & Math).
Age of Empires III leans a little harder on execution, though the gap is small.
Age of Empires III
Unit micro and raid defense
Ultima Online
PvP timing and macro dexterity matter
Age of Empires III leans a little harder on reads, though the gap is small.
Age of Empires III
Human deck and timing reads in ranked
Ultima Online
Player killers and traders adapt to you
Age of Empires III leans a little harder on variance, though the gap is small.
Age of Empires III
Map spawns and shipment ordering unknowns
Ultima Online
Open-world encounters and loot uncertainty
Age of Empires III leans a little harder on optimization, though the gap is small.
Age of Empires III
Home-city decks are a build-crafting layer
Ultima Online
Skill builds and the player economy reward system mastery
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.