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

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

Execution · Grand Arena
A tag-enhanced Tekken that multiplies execution demands and opponent reads by adding partner management to every exchange.
Skullgirls leans Execution (Grand Arena); Tekken Tag Tournament 2 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
Tekken Tag Tournament 2
Tag combos and partner launcher extensions demand high motor precision
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
Tekken Tag Tournament 2
Tag crash timing and incoming character reads against humans are constant
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
Tekken Tag Tournament 2
No RNG; all information is visible
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Skullgirls
Ratio team building and combo routing are extensively optimised by the community
Tekken Tag Tournament 2
Tag team pairings and shared health management reward deep preparation
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.