head to head
PUBG Mobile asks more than Arma 3, and the gap is variance.

Execution · Grand Arena
Open military simulator and PvP sandbox.

Execution · Grand Arena
Battle royale survival blending aim, rotation planning, and heavy circle-and-loot RNG.
Arma 3 leans Execution (Grand Arena); PUBG Mobile 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
PUBG Mobile
Touchscreen aim and recoil control set the ceiling
Arma 3 leans a little harder on reads, though the gap is small.
Arma 3
PvP and milsim ops reward prediction
PUBG Mobile
Outguessing rotations and third-party timing of human squads
PUBG Mobile leans clearly harder on variance.
Arma 3
Mission scripts and AI behavior vary
PUBG Mobile
Circle placement, loot and drop locations dominate single matches
Arma 3 leans a little harder on optimization, though the gap is small.
Arma 3
Loadout planning and tactics solvable
PUBG Mobile
Zone rotation theory and loadout priorities are well mapped
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.