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
The peak-era Konami football game prized for weighty, skill-driven match play.
Disc Jam leans Execution (Competitive PvP); Pro Evolution Soccer 6 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
Pro Evolution Soccer 6
First touch, through balls, and dribbles demand precise control
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
Pro Evolution Soccer 6
Versus matches are constant feint and positioning prediction
Pro Evolution Soccer 6 leans a little harder on variance, though the gap is small.
Disc Jam
Physics are consistent, almost nothing random
Pro Evolution Soccer 6
Deflections and keeper spills add light randomness
Pro Evolution Soccer 6 leans a little harder on optimization, though the gap is small.
Disc Jam
Character kits and throw tech form a thin meta
Pro Evolution Soccer 6
Formations and player roles are studyable
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.