head to head
Counter-Strike: Global Offensive asks more than Worms: Ultimate Mayhem, and the gap is execution.

Execution · Competitive PvP
Definitive competitive tactical FPS balancing aim mastery with team strategy.

Execution · Competitive PvP
Tests trajectory aim and turn planning against human targets amid crate luck.
Counter-Strike: Global Offensive leans Execution (Competitive PvP); Worms: Ultimate Mayhem leans Execution (Competitive PvP).
Counter-Strike: Global Offensive leans clearly harder on execution.
Counter-Strike: Global Offensive
Spray control and flick precision at the top
Worms: Ultimate Mayhem
3D grenade arcs and ninja-rope control reward practiced aim
Counter-Strike: Global Offensive leans clearly harder on reads.
Counter-Strike: Global Offensive
Anti-stratting and mid-round adaptation
Worms: Ultimate Mayhem
Predicting a human's target priorities shapes each turn
Worms: Ultimate Mayhem leans a little harder on variance, though the gap is small.
Counter-Strike: Global Offensive
Information hidden until contact
Worms: Ultimate Mayhem
Crate drops, wind and terrain chaos swing rounds
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Counter-Strike: Global Offensive
Utility lineups, economy, and default strats
Worms: Ultimate Mayhem
Weapon economy and positioning are plannable each turn
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.