head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

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

Reads · Bluff & Deduction
A party-game collection built on reading friends and comedic bluffing.
Tabletop Simulator leans Reads (Bluff & Deduction); The Jackbox Party Pack 9 leans Reads (Bluff & Deduction).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Tabletop Simulator
Fiddly physics manipulation, never a skill ceiling
The Jackbox Party Pack 9
minor typing/drawing speed in some games
The Jackbox Party Pack 9 leans a little harder on reads, though the gap is small.
Tabletop Simulator
Depends entirely on the tabletop game played with humans
The Jackbox Party Pack 9
reading fellow players' humor and bluffs
Tabletop Simulator leans a little harder on variance, though the gap is small.
Tabletop Simulator
Dice and shuffled decks supply whatever randomness the game has
The Jackbox Party Pack 9
prompt randomness affects rounds
Tabletop Simulator leans a little harder on optimization, though the gap is small.
Tabletop Simulator
Strategy lives in the hosted game, not the simulator
The Jackbox Party Pack 9
minor strategic answer choices
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.