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
Timing on the ball and outguessing the opposing player's tactics.

Execution · Competitive PvP
Large-battle aim and positioning with light prediction against human players.
FIFA Soccer 06 leans Execution (Competitive PvP); Star Wars: Battlefront II leans Execution (Competitive PvP).
Star Wars: Battlefront II leans a little harder on execution, though the gap is small.
FIFA Soccer 06
First-touch control and shot timing decide chances
Star Wars: Battlefront II
Aimbot dominates infantry fights and starfighter dogfights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 06
Human opponents vary attack patterns and bait tackles
Star Wars: Battlefront II
Human opponents in multiplayer create modest prediction play
Star Wars: Battlefront II leans a little harder on variance, though the gap is small.
FIFA Soccer 06
Bounces and keeper spills inject small randomness
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 06
Squad selection and tactics reward preparation
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.