head to head
Agar.io asks more than The Jackbox Party Pack 3, and the gap is execution.

Reads · Competitive PvP
A browser arena where your cell eats smaller players and flees bigger ones.

Reads · Bluff & Deduction
The pack with Trivia Murder Party and Fakin' It, built on out-guessing the room.
Agar.io leans Reads (Competitive PvP); The Jackbox Party Pack 3 leans Reads (Bluff & Deduction).
Agar.io leans clearly harder on execution.
Agar.io
Mouse steering and split timing
The Jackbox Party Pack 3
Phones-as-controllers, near-zero dexterity.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Agar.io
Baiting and predicting human blobs decides fights
The Jackbox Party Pack 3
Trivia Murder Party and Fakin' It reward reading the room.
The Jackbox Party Pack 3 leans a little harder on variance, though the gap is small.
Agar.io
Spawn locations and lobby makeup random
The Jackbox Party Pack 3
Random prompts and question draws.
Agar.io leans a little harder on optimization, though the gap is small.
Agar.io
Split-merge math is shallow but real
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.