head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is optimization, and it is a single point.

Execution · Grand Arena
A technically rich tag fighter where assist-driven combos and team synergy optimisation reward deep practice.

Execution · Grand Arena
A hyper-fast tag fighting game defined by three-character teams and touch-of-death combos.
Skullgirls leans Execution (Grand Arena); Ultimate Marvel vs. Capcom 3 leans Execution (Grand Arena).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Skullgirls
Long Blockbuster extensions and precise assist calls demand high motor skill
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.
Skullgirls
Team composition reads and opponent tendency tracking are constant
Ultimate Marvel vs. Capcom 3
Mixups and assist baits versus adapting humans
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Skullgirls
No RNG; all information is transparent
Ultimate Marvel vs. Capcom 3
Almost fully deterministic
Skullgirls leans a little harder on optimization, though the gap is small.
Skullgirls
Ratio team building and combo routing are extensively optimised by the community
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.