head to head
Worms 4: MayhemvsWorms W.M.D
Worms 4: Mayhem leans Optimization (Practiced Mastery); Worms W.M.D leans Reads (Competitive PvP).
Worms 4: MayhemWorms W.M.D
Axis by axis
Execution5 vs 5
Even - both lean on execution about the same.
Reads5 vs 6
Worms W.M.D leans harder on reads: Multiplayer turns hinge on out-guessing rival worm placement
Variance4 vs 4
Even - both lean on variance about the same.
Optimization6 vs 5
Worms 4: Mayhem leans harder on optimization: Weapon economy and positional planning decide turns
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

