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

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

Execution · Competitive PvP
Fast arena-fighter execution plus guessing games against a human opponent.
Disc Jam leans Execution (Competitive PvP); Dragon Ball Z: Budokai Tenkaichi 3 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
Dragon Ball Z: Budokai Tenkaichi 3
Combo timing, dashes and beam clashes demand fast hands
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
Dragon Ball Z: Budokai Tenkaichi 3
Versus humans, baiting counters and vanish wars is prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Disc Jam
Physics are consistent, almost nothing random
Dragon Ball Z: Budokai Tenkaichi 3
Almost nothing hidden once both rosters are known
Dragon Ball Z: Budokai Tenkaichi 3 leans a little harder on optimization, though the gap is small.
Disc Jam
Character kits and throw tech form a thin meta
Dragon Ball Z: Budokai Tenkaichi 3
Character tiers and combo routes form a learnable 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.