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.

Reads · Mind & Math
Real-time PvP card battler decided by elixir trades and outguessing your opponent.
Age of Empires III leans Optimization (Mind & Math); Clash Royale leans Reads (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
Clash Royale
Placement precision and elixir timing under pressure
Clash Royale leans a little harder on reads, though the gap is small.
Age of Empires III
Human deck and timing reads in ranked
Clash Royale
Live human opponent baits and counters you
Clash Royale leans a little harder on variance, though the gap is small.
Age of Empires III
Map spawns and shipment ordering unknowns
Clash Royale
Opponent's deck hidden until cards appear
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
Clash Royale
Elixir trades and matchup theory are deep
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.