head to head
PlayerUnknown's Battlegrounds asks more than Arma 3, and the gap is variance.

Execution · Grand Arena
Open military simulator and PvP sandbox.

Execution · Grand Arena
The battle royale archetype: loot, rotate, and outlast 99 opponents inside a shrinking circle.
Arma 3 leans Execution (Grand Arena); PlayerUnknown's Battlegrounds leans Execution (Grand Arena).
Arma 3 leans a little harder on execution, though the gap is small.
Arma 3
Bullet drop, stance, sway, weight all matter
PlayerUnknown's Battlegrounds
Recoil control and long-range ballistics
Arma 3 leans a little harder on reads, though the gap is small.
Arma 3
PvP and milsim ops reward prediction
PlayerUnknown's Battlegrounds
99 humans rotating and ambushing adaptively
PlayerUnknown's Battlegrounds leans clearly harder on variance.
Arma 3
Mission scripts and AI behavior vary
PlayerUnknown's Battlegrounds
Loot spawns and circle placement shape every match
Arma 3 leans a little harder on optimization, though the gap is small.
Arma 3
Loadout planning and tactics solvable
PlayerUnknown's Battlegrounds
Zone rotations and positioning theory are learnable
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.