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 · Grand Arena
A 3D arena fighter where Perception counter exchanges create intense read-off moments between human opponents.

Execution · Grand Arena
Frame-perfect execution fused with constant prediction of an adapting human opponent.
Dragon Ball: Sparking! Zero leans Execution (Grand Arena); Ultra Street Fighter IV leans Execution (Grand Arena).
Ultra Street Fighter IV leans a little harder on execution, though the gap is small.
Dragon Ball: Sparking! Zero
Perception counter timing and Ki charge positioning demand precise execution
Ultra Street Fighter IV
One-frame links and FADC timing set a brutal hands ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball: Sparking! Zero
Perception and counter-burst exchanges are pure human reads
Ultra Street Fighter IV
Footsies and conditioning the human opponent is the core duel
Dragon Ball: Sparking! Zero leans a little harder on variance, though the gap is small.
Dragon Ball: Sparking! Zero
Character scaling imbalance adds mild outcome variance
Ultra Street Fighter IV
Almost nothing hidden once both characters are known
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Dragon Ball: Sparking! Zero
Character tier selection and Dragon Rush routing reward study
Ultra Street Fighter IV
Frame data, matchups and option-selects form deep studied theory
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.