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
Stick execution and outguessing a human defender, with tactics underneath.

Execution · Competitive PvP
A movement-first multiplayer shooter where parkour aim duels decide fights.
FIFA Soccer 08 leans Execution (Competitive PvP); Titanfall leans Execution (Competitive PvP).
Titanfall leans a little harder on execution, though the gap is small.
FIFA Soccer 08
Dribbling, timing tackles and finishing reward stick skill
Titanfall
Wall-running gunfights demand elite aim and movement
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 08
Versus humans, baiting defenders and disguising attacks is core
Titanfall
Human pilots adapt positioning and titan timing against you
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA Soccer 08
Ball physics adds bounce noise to single matches
Titanfall
Some uncertainty in titan drops and flanks
Titanfall leans a little harder on optimization, though the gap is small.
FIFA Soccer 08
Formations and squad selection matter but stay shallow
Titanfall
Loadouts and titan timing are a thin solvable layer
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.