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

Execution · Competitive PvP
Football execution with finer dribble control, human prediction, and bounce luck.

Execution · Competitive PvP
Large-battle aim and positioning with light prediction against human players.
FIFA Soccer 10 leans Execution (Competitive PvP); Star Wars: Battlefront II leans Execution (Competitive PvP).
FIFA Soccer 10 leans a little harder on execution, though the gap is small.
FIFA Soccer 10
360-degree dribbling raised the stick-skill ceiling
Star Wars: Battlefront II
Aimbot dominates infantry fights and starfighter dogfights
FIFA Soccer 10 leans a little harder on reads, though the gap is small.
FIFA Soccer 10
Outguessing a human defender's tackle timing is constant
Star Wars: Battlefront II
Human opponents in multiplayer create modest prediction play
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 10
Deflections and keeper randomness swing tight matches
Star Wars: Battlefront II
Spawns, vehicle availability and hero pickups add chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 10
Formations, tactics and manager mode reward study
Star Wars: Battlefront II
Class choice and map control reward learned plans
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.