head to head
Neither is simply harder - they are hard in different places. Among Us demands more variance; Diplomacy demands more optimization.

Reads · Pure Mind Games
A social deduction party game where crewmates vote out hidden impostors between chores.

Reads · Pure Mind Games
A classic strategy game of negotiation and betrayal among nations.
Among Us leans Reads (Pure Mind Games); Diplomacy leans Reads (Pure Mind Games).
Among Us leans a little harder on execution, though the gap is small.
Among Us
Tasks are trivial minigames
Diplomacy
no physical skill, purely negotiation and planning
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Among Us
Lying to and reading humans IS the game
Diplomacy
reading and out-negotiating human players is core
Among Us leans clearly harder on variance.
Among Us
Role assignment and kill information hidden
Diplomacy
no hidden info or randomness, pure information
Diplomacy leans clearly harder on optimization.
Among Us
Task routes and vent logic give small edges
Diplomacy
strategic alliance and movement planning 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.