head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Execution · Grand Arena
Open military simulator and PvP sandbox.
Execution · Competitive PvP
Destruction-heavy team shooter with cashout heists.
Arma 3 leans Execution (Grand Arena); The Finals 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.
Arma 3
Bullet drop, stance, sway, weight all matter
The Finals
Movement and aim under destruction chaos
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
The Finals
Cashout fights are three-team mind games
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Arma 3
Mission scripts and AI behavior vary
The Finals
Destruction and event modifiers shake fights
Arma 3 leans a little harder on optimization, though the gap is small.
Arma 3
Loadout planning and tactics solvable
The Finals
Class loadouts and gadget synergies
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.