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.

Reads · Grand Arena
A DC fighter where Clash wager mind-games and character-specific stage interactions add layers to the competitive match.

Execution · Competitive PvP
Combo execution and endless mixup prediction against adapting human opponents.
Injustice: Gods Among Us leans Reads (Grand Arena); Persona 4 Arena leans Execution (Competitive PvP).
Persona 4 Arena leans a little harder on execution, though the gap is small.
Injustice: Gods Among Us
Wager and clash system adds readable but executable decision points
Persona 4 Arena
Combo execution and confirm timing gate competitive play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Injustice: Gods Among Us
Clash wager reads and opponent pattern prediction against humans
Persona 4 Arena
Mixups and throw-tech guessing against adapting humans never converge
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Injustice: Gods Among Us
No RNG; match flow is transparent
Persona 4 Arena
Almost nothing random in a fighting match
Injustice: Gods Among Us leans a little harder on optimization, though the gap is small.
Injustice: Gods Among Us
Character tier matchups and stage interaction abuse reward study
Persona 4 Arena
Frame data, matchup study and meter math reward homework
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.