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

Execution · Grand Arena
Hero-driven squad RTS where wargear optimization and ability timing combine with reading aggressive opponents.

Execution · Competitive PvP
Turn-based artillery comedy where teams of worms annihilate each other.
Warhammer 40,000: Dawn of War II leans Execution (Grand Arena); Worms 2 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.
Warhammer 40,000: Dawn of War II
Hero ability activation and squad retreat timing are mechanically demanding
Worms 2
Ninja rope mastery and pixel-perfect grenade arcs win games.
Warhammer 40,000: Dawn of War II leans a little harder on reads, though the gap is small.
Warhammer 40,000: Dawn of War II
Opponent army composition and hero focus must be predicted
Worms 2
Human opponents bait positions and hide intentions.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Warhammer 40,000: Dawn of War II
Retreat damage, wargear drops, and map control variance add uncertainty
Worms 2
Wind, crate drops and terrain randomness swing turns.
Warhammer 40,000: Dawn of War II leans a little harder on optimization, though the gap is small.
Warhammer 40,000: Dawn of War II
Wargear builds and ability upgrade sequences are optimizable
Worms 2
Weapon economy and positioning theory are studyable.
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.