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.

Reads · Pure Mind Games
A first-person social deduction game about deceiving and reading human players.

Reads · Pure Mind Games
A split-screen trap duel testing prediction of where your human rival hid the bombs.
Among Us 3D leans Reads (Pure Mind Games); Spy vs Spy leans Reads (Pure Mind Games).
Spy vs Spy leans a little harder on execution, though the gap is small.
Among Us 3D
Movement and tasks need no real motor skill
Spy vs Spy
Simple movement and item fiddling under time pressure
Among Us 3D leans a little harder on reads, though the gap is small.
Among Us 3D
Deceiving and reading human players is the entire game
Spy vs Spy
Guessing where the rival spy laid traps is the core duel
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Among Us 3D
Impostor assignment and alibis are hidden information
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 3D
Task efficiency and meeting logic are light systems
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.