head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Competitive PvP
Artillery touch, human prediction and weapon economy in destructible 3D terrain.

Execution · Competitive PvP
Artillery aim and turn planning against humans under wind and crate randomness.
Worms 3D leans Execution (Competitive PvP); Worms Battlegrounds leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Worms 3D
Judging grenade arcs and wind in 3D takes real touch
Worms Battlegrounds
Grenade arcs and ninja-rope control reward precise aim
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Worms 3D
Predicting where a human hides and strikes next matters
Worms Battlegrounds
Human opponents adapt positioning and bait retaliation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Worms 3D
Wind, crate drops and terrain chaos swing turns
Worms Battlegrounds
Wind, crate drops and terrain destruction add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Worms 3D
Weapon economy and positioning math reward planning
Worms Battlegrounds
Weapon economy and turn order planning are solvable
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.