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

Execution · Competitive PvP
Artillery aim and turn planning against human opponents on destructible terrain.

Reads · Competitive PvP
Modern Worms with crafting and vehicles, keeping the classic turn-based destructible-terrain warfare.
Worms Clan Wars leans Execution (Competitive PvP); Worms W.M.D leans Reads (Competitive PvP).
Worms Clan Wars leans a little harder on execution, though the gap is small.
Worms Clan Wars
Grenade arcs and ninja-rope control decide turns
Worms W.M.D
Shot arcs, rope swings and vehicle control demand precision
Worms W.M.D leans a little harder on reads, though the gap is small.
Worms Clan Wars
Anticipating human opponents' target priorities matters in clan play
Worms W.M.D
Multiplayer turns hinge on out-guessing rival worm placement
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Worms Clan Wars
Crate drops and terrain destruction add swing
Worms W.M.D
Wind, crates and random terrain reshape options
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Worms Clan Wars
Weapon economy and positioning plans reward forethought
Worms W.M.D
Crafting and weapon budgeting reward planned turns
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.