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
Chaotic tag fighter whose top tiers reward blistering execution and assist mastery.

Execution · Grand Arena
A weapons-based 3D fighter where Reversal Edge decisions and ring positioning create constant human reads.
Marvel vs. Capcom 2: New Age of Heroes leans Execution (Grand Arena); SoulCalibur VI leans Execution (Grand Arena).
Marvel vs. Capcom 2: New Age of Heroes leans a little harder on execution, though the gap is small.
Marvel vs. Capcom 2: New Age of Heroes
infinite combos and assist timing demand elite hands
SoulCalibur VI
Reversal Edge timing and long lethal hit strings require tight execution
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel vs. Capcom 2: New Age of Heroes
humans bait assists and mix high-low constantly
SoulCalibur VI
Reversal Edge is a pure read-off mechanic against human opponents
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel vs. Capcom 2: New Age of Heroes
fully deterministic engine
SoulCalibur VI
No RNG; ring position is full information
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel vs. Capcom 2: New Age of Heroes
team order, assist synergy, and matchup knowledge
SoulCalibur VI
Soul Charge routes and matchup character knowledge reward study
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.