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

Reads · Bluff & Deduction
A party collection of social minigames played via phones with friends.

Reads · Bluff & Deduction
A bluff-heavy pack where predicting what your friends will write is the whole game.
The Jackbox Party Pack 10 leans Reads (Bluff & Deduction); The Jackbox Party Pack 4 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.
The Jackbox Party Pack 10
No physical skill, just typing/drawing on phones.
The Jackbox Party Pack 4
Tapping a phone screen.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
The Jackbox Party Pack 10
Outguessing and bluffing other human players drives scoring.
The Jackbox Party Pack 4
Fibbage 3 and Survive the Internet reward modelling friends.
The Jackbox Party Pack 4 leans a little harder on variance, though the gap is small.
The Jackbox Party Pack 10
Prompt randomness and voting variance shape outcomes.
The Jackbox Party Pack 4
Random prompts shuffle every session.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
The Jackbox Party Pack 10
Little to master beyond humor and social reading.
The Jackbox Party Pack 4
Marginal trivia and wording strategy.
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.