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

Execution · Competitive PvP
Reflex disc rallies decided by throw precision and outguessing the human opponent.

Execution · Competitive PvP
Stick execution and outguessing a human defender, with tactics underneath.
Disc Jam leans Execution (Competitive PvP); FIFA Soccer 08 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.
Disc Jam
Volley timing, angles and positioning are pure reflex
FIFA Soccer 08
Dribbling, timing tackles and finishing reward stick skill
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Disc Jam
Rallies are won by faking out the human across the net
FIFA Soccer 08
Versus humans, baiting defenders and disguising attacks is core
FIFA Soccer 08 leans a little harder on variance, though the gap is small.
Disc Jam
Physics are consistent, almost nothing random
FIFA Soccer 08
Ball physics adds bounce noise to single matches
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Disc Jam
Character kits and throw tech form a thin meta
FIFA Soccer 08
Formations and squad selection matter but stay shallow
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.