head to head
Suck Up! asks more than The Jackbox Party Pack 4, and the gap is optimization.

Variance · Bluff & Deduction
Improvising persuasion against AI characters whose quirks must be probed each visit.

Reads · Bluff & Deduction
A bluff-heavy pack where predicting what your friends will write is the whole game.
Suck Up! leans Variance (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.
Suck Up!
Talking and clicking disguises, no twitch layer
The Jackbox Party Pack 4
Tapping a phone screen.
The Jackbox Party Pack 4 leans a little harder on reads, though the gap is small.
Suck Up!
AI neighbors respond to your words semi-adaptively per encounter
The Jackbox Party Pack 4
Fibbage 3 and Survive the Internet reward modelling friends.
Suck Up! leans a little harder on variance, though the gap is small.
Suck Up!
Each NPC's personality and reactions are unknown until probed
The Jackbox Party Pack 4
Random prompts shuffle every session.
Suck Up! leans clearly harder on optimization.
Suck Up!
Reliable persuasion scripts emerge and converge over time
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.