head to head
Dissidia 012 Final Fantasy asks more than Grand Theft Auto V, and the gap is reads.

Execution · Practiced Mastery
Arena dueling that mixes build preparation with execution and opponent prediction.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Dissidia 012 Final Fantasy leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Dissidia 012 Final Fantasy leans a little harder on execution, though the gap is small.
Dissidia 012 Final Fantasy
Aerial chases and punish timing demand real dexterity
Grand Theft Auto V
Driving and shooting demand decent inputs.
Dissidia 012 Final Fantasy leans clearly harder on reads.
Dissidia 012 Final Fantasy
Versus humans, bravery mind-games and bait punishes matter
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dissidia 012 Final Fantasy
Little randomness once movesets are known
Grand Theft Auto V
Some mission and lobby randomness.
Dissidia 012 Final Fantasy leans clearly harder on optimization.
Dissidia 012 Final Fantasy
Builds, equipment and matchup knowledge shape every fight
Grand Theft Auto V
Heists, money loops, builds learnable.
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.