head to head
Immortals of Aveum asks more than Grand Theft Auto: San Andreas, and the gap is execution.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.

Execution · Practiced Mastery
Magic-as-guns FPS campaign through a war between battlemage legions.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Immortals of Aveum leans Execution (Practiced Mastery).
Immortals of Aveum leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Immortals of Aveum
Spell-slinging aim and dodge timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Immortals of Aveum
Enemy mages run scripted AI
Grand Theft Auto: San Andreas leans a little harder on variance, though the gap is small.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Immortals of Aveum
Minor loot randomness
Grand Theft Auto: San Andreas leans a little harder on optimization, though the gap is small.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
Immortals of Aveum
Sigil loadouts and talent-tree choices
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.