head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Competitive PvP
An air-dash anime fighter where pairing each girl with an elemental Arcana doubles the roster math.

Execution · Competitive PvP
High-speed tag-team execution and human prediction in gleeful early-Versus chaos.
Arcana Heart 3 leans Execution (Competitive PvP); Marvel vs. Capcom: Clash of Super Heroes 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.
Arcana Heart 3
Homing dashes and extended air combos need fast precise inputs.
Marvel vs. Capcom: Clash of Super Heroes
Chain combos, assists and infinites demand fast precise hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Arcana Heart 3
Full-screen approach mixups against humans stay adaptive.
Marvel vs. Capcom: Clash of Super Heroes
Baiting a human's assist call or super is the duel
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Arcana Heart 3
Deterministic; arcana chosen openly.
Marvel vs. Capcom: Clash of Super Heroes
Hidden characters aside, everything is public
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Arcana Heart 3
Character-arcana pairings multiply the labbable matchup space.
Marvel vs. Capcom: Clash of Super Heroes
Team composition and infinite-combo knowledge define the meta
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.