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
A hyper-fast tag fighting game defined by three-character teams and touch-of-death combos.
Dragon Ball: Sparking! Zero leans Execution (Grand Arena); Ultimate Marvel vs. Capcom 3 leans Execution (Grand Arena).
Ultimate Marvel vs. Capcom 3 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
Ultimate Marvel vs. Capcom 3
Long touch-of-death combos demand elite hands
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
Ultimate Marvel vs. Capcom 3
Mixups and assist baits versus adapting humans
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
Ultimate Marvel vs. Capcom 3
Almost fully deterministic
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
Ultimate Marvel vs. Capcom 3
Team composition and matchup knowledge run deep
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.