head to head
Neither is simply harder - they are hard in different places. Among Us demands more reads; Spy vs Spy demands more execution.

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

Reads · Pure Mind Games
A split-screen trap duel testing prediction of where your human rival hid the bombs.
Among Us leans Reads (Pure Mind Games); Spy vs Spy leans Reads (Pure Mind Games).
Spy vs Spy leans clearly harder on execution.
Among Us
Tasks are trivial minigames
Spy vs Spy
Simple movement and item fiddling under time pressure
Among Us leans clearly harder on reads.
Among Us
Lying to and reading humans IS the game
Spy vs Spy
Guessing where the rival spy laid traps is the core duel
Among Us leans a little harder on variance, though the gap is small.
Among Us
Role assignment and kill information hidden
Spy vs Spy
Item locations are hidden information each round
Spy vs Spy leans a little harder on optimization, though the gap is small.
Among Us
Task routes and vent logic give small edges
Spy vs Spy
Trap-and-counter knowledge forms a learnable layer
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.