head to head
Battlefield 4 asks more than FIFA 99, and the gap is optimization.

Execution · Competitive PvP
Combined-arms multiplayer shooter famous for map-altering levolution moments and 64-player conquest.

Execution · Competitive PvP
Late-90s arcade football execution with couch-versus prediction and bouncy luck.
Battlefield 4 leans Execution (Competitive PvP); FIFA 99 leans Execution (Competitive PvP).
Battlefield 4 leans a little harder on execution, though the gap is small.
Battlefield 4
Gunplay, vehicle mastery, and movement under fire
FIFA 99
Quick passing and shot timing in arcade-leaning football
Battlefield 4 leans a little harder on reads, though the gap is small.
Battlefield 4
Human teams adapt to flanks and levolution chokes
FIFA 99
Couch opponents can be conditioned and baited
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Battlefield 4
Map-altering events and spawns inject noise
FIFA 99
Era physics produce regular fluke goals
Battlefield 4 leans clearly harder on optimization.
Battlefield 4
Loadout tuning and objective rotation knowledge
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.