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 · Practiced Mastery
Arena duels mixing twitch dodge-punish play with RPG build preparation.

Execution · Competitive PvP
A hero battle royale where teamwork and aim against human opponents decides fights.
Dissidia Final Fantasy leans Execution (Practiced Mastery); My Hero Ultra Rumble 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.
Dissidia Final Fantasy
Aerial dashes, dodge timing and punishes demand fast hands
My Hero Ultra Rumble
aim and combo timing in battles
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Dissidia Final Fantasy
Human duels hinge on baiting bravery attacks and dodges
My Hero Ultra Rumble
predicting human opponent tactics
My Hero Ultra Rumble leans a little harder on variance, though the gap is small.
Dissidia Final Fantasy
Some equipment and summon randomness, mostly known state
My Hero Ultra Rumble
item and loot drops are random
Dissidia Final Fantasy leans a little harder on optimization, though the gap is small.
Dissidia Final Fantasy
Builds, accessories and matchup knowledge shape every duel
My Hero Ultra Rumble
team comps and loadouts solvable
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.