head to head
Unfortunate Spacemen asks more than Tabletop Simulator, and the gap is reads.

Reads · Bluff & Deduction
A physics sandbox whose actual skill test is whatever board game you load into it.

Reads · Bluff & Deduction
Spacemen complete station tasks while a shapeshifting monster impersonates and eats them.
Tabletop Simulator leans Reads (Bluff & Deduction); Unfortunate Spacemen leans Reads (Bluff & Deduction).
Unfortunate Spacemen leans clearly harder on execution.
Tabletop Simulator
Fiddly physics manipulation, never a skill ceiling
Unfortunate Spacemen
Shooter combat matters once the monster is exposed.
Unfortunate Spacemen leans clearly harder on reads.
Tabletop Simulator
Depends entirely on the tabletop game played with humans
Unfortunate Spacemen
The shapeshifter wins by out-modeling suspicious human crewmates.
Unfortunate Spacemen leans clearly harder on variance.
Tabletop Simulator
Dice and shuffled decks supply whatever randomness the game has
Unfortunate Spacemen
Hidden monster identity and random objectives drive uncertainty.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Tabletop Simulator
Strategy lives in the hosted game, not the simulator
Unfortunate Spacemen
Station layouts and objective flow reward repetition modestly.
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.