head to head
The Jackbox Party Pack 3 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
The pack with Trivia Murder Party and Fakin' It, built on out-guessing the room.
Tabletop Simulator leans Reads (Bluff & Deduction); The Jackbox Party Pack 3 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 3
Phones-as-controllers, near-zero dexterity.
The Jackbox Party Pack 3 leans clearly harder on reads.
Tabletop Simulator
Depends entirely on the tabletop game played with humans
The Jackbox Party Pack 3
Trivia Murder Party and Fakin' It reward reading the room.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Tabletop Simulator
Dice and shuffled decks supply whatever randomness the game has
The Jackbox Party Pack 3
Random prompts and question draws.
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 3
Light trivia and betting math.
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.