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 sprawling military simulator where realistic ballistics and planning beat reflexes.

Execution · Practiced Mastery
Artillery aim under wind combined with fort economy planning against human opponents.
Arma 2 leans Execution (Competitive PvP); Worms Forts: Under Siege leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Arma 2
Ballistics, stance, and positioning over twitch aim
Worms Forts: Under Siege
Manual trajectory aiming under wind decides each shot
Arma 2 leans a little harder on reads, though the gap is small.
Arma 2
Human squads in PvP scenarios adapt
Worms Forts: Under Siege
Human opponents to outguess on building and target priorities
Arma 2 leans a little harder on variance, though the gap is small.
Arma 2
Vast terrain hides enemy positions
Worms Forts: Under Siege
Wind, crates and terrain damage randomize turns
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Arma 2
Doctrine, loadouts, and mission planning
Worms Forts: Under Siege
Fort placement and weapon-tech economy reward planning
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.