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

Execution · Grand Arena
Open military simulator and PvP sandbox.

Execution · Grand Arena
Team hero shooter blending FPS mechanics with ability economy mind games.
Arma 3 leans Execution (Grand Arena); Overwatch leans Execution (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Arma 3
Bullet drop, stance, sway, weight all matter
Overwatch
Hero aim, movement, and ability timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Arma 3
PvP and milsim ops reward prediction
Overwatch
Ult tracking, flanks, and baiting human teams
Arma 3 leans clearly harder on variance.
Arma 3
Mission scripts and AI behavior vary
Overwatch
Minor spread and matchmaking noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Arma 3
Loadout planning and tactics solvable
Overwatch
Team comps, ult economy, and positioning theory
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.