head to head
Neither is simply harder - they are hard in different places. Age of Empires II: The Age of Kings demands more variance; Overwatch demands more execution.

Optimization · Grand Arena
The definitive medieval RTS where castle drops and farm economies decide empires.

Execution · Grand Arena
Team hero shooter blending FPS mechanics with ability economy mind games.
Age of Empires II: The Age of Kings leans Optimization (Grand Arena); Overwatch leans Execution (Grand Arena).
Overwatch leans clearly harder on execution.
Age of Empires II: The Age of Kings
Micro, villager management, hotkey speed
Overwatch
Hero aim, movement, and ability timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Age of Empires II: The Age of Kings
High-level play is predicting human openings
Overwatch
Ult tracking, flanks, and baiting human teams
Age of Empires II: The Age of Kings leans clearly harder on variance.
Age of Empires II: The Age of Kings
Fog, map gen, civ matchups
Overwatch
Minor spread and matchmaking noise
Age of Empires II: The Age of Kings leans clearly harder on optimization.
Age of Empires II: The Age of Kings
Build orders refined over two decades
Overwatch
Team comps, ult economy, and positioning theory
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.