head to head
Arma 2 asks more than FIFA 99, and the gap is optimization.

Execution · Competitive PvP
A sprawling military simulator where realistic ballistics and planning beat reflexes.

Execution · Competitive PvP
Late-90s arcade football execution with couch-versus prediction and bouncy luck.
Arma 2 leans Execution (Competitive PvP); FIFA 99 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 2
Ballistics, stance, and positioning over twitch aim
FIFA 99
Quick passing and shot timing in arcade-leaning football
Arma 2 leans a little harder on reads, though the gap is small.
Arma 2
Human squads in PvP scenarios adapt
FIFA 99
Couch opponents can be conditioned and baited
Arma 2 leans a little harder on variance, though the gap is small.
Arma 2
Vast terrain hides enemy positions
FIFA 99
Era physics produce regular fluke goals
Arma 2 leans clearly harder on optimization.
Arma 2
Doctrine, loadouts, and mission planning
FIFA 99
Simple formations and known exploit angles map fast
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.