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 · Competitive PvP
A hero battle royale where teamwork and aim against human opponents decides fights.

Execution · Competitive PvP
Turn-based artillery comedy where teams of worms annihilate each other.
My Hero Ultra Rumble leans Execution (Competitive PvP); 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.
My Hero Ultra Rumble
aim and combo timing in battles
Worms 2
Ninja rope mastery and pixel-perfect grenade arcs win games.
Worms 2 leans a little harder on reads, though the gap is small.
My Hero Ultra Rumble
predicting human opponent tactics
Worms 2
Human opponents bait positions and hide intentions.
Worms 2 leans a little harder on variance, though the gap is small.
My Hero Ultra Rumble
item and loot drops are random
Worms 2
Wind, crate drops and terrain randomness swing turns.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
My Hero Ultra Rumble
team comps and loadouts solvable
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.