head to head
League of Legends asks more than Age of Empires III, and the gap is reads.

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

Reads · Grand Arena
A team MOBA where map control and adaptive duels decide objectives.
Age of Empires III leans Optimization (Mind & Math); League of Legends leans Reads (Grand Arena).
League of Legends leans a little harder on execution, though the gap is small.
Age of Empires III
Unit micro and raid defense
League of Legends
Mechanics matter but not aimbot-decisive.
League of Legends leans clearly harder on reads.
Age of Empires III
Human deck and timing reads in ranked
League of Legends
Lane and jungle constantly mind-game opponents.
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
League of Legends
Champion select and minor RNG only.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires III
Home-city decks are a build-crafting layer
League of Legends
Itemization, wave management, and macro are 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.