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

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

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.
Dragon Ball: Xenoverse leans Execution (Practiced Mastery); Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery).
Dragon Ball: Xenoverse leans clearly harder on execution.
Dragon Ball: Xenoverse
3D arena combos, vanishes and ki management need practiced hands
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Dragon Ball: Xenoverse leans clearly harder on reads.
Dragon Ball: Xenoverse
Online PvP rewards predicting human mixups; PvE is scripted
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
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: San Andreas
Territory wars and traffic add light randomness
Grand Theft Auto: San Andreas 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: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
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.