head to head
Dragon Ball: Xenoverse asks more than Grand Theft Auto V, and the gap is reads.

Execution · Practiced Mastery
An arena fighter mixing combo execution, build grinding and human prediction online.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.
Dragon Ball: Xenoverse leans Execution (Practiced Mastery); Grand Theft Auto V leans Execution (Practiced Mastery).
Dragon Ball: Xenoverse leans a little harder on execution, though the gap is small.
Dragon Ball: Xenoverse
3D arena combos, vanishes and ki management need practiced hands
Grand Theft Auto V
Driving and shooting demand decent inputs.
Dragon Ball: Xenoverse leans clearly harder on reads.
Dragon Ball: Xenoverse
Online PvP rewards predicting human mixups; PvE is scripted
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.
Dragon Ball: Xenoverse
Skill drops from missions roll randomly
Grand Theft Auto V
Some mission and lobby randomness.
Dragon Ball: Xenoverse leans a little harder on optimization, though the gap is small.
Dragon Ball: Xenoverse
Build crafting and attribute allocation shape PvP viability
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.