head to head
Clive Barker's Undying asks more than Grand Theft Auto: San Andreas, and the gap is execution.

Execution · Practiced Mastery
A gothic horror FPS where a paranormal investigator fights a family curse with revolver in one hand and spells in the other.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.
Clive Barker's Undying leans Execution (Practiced Mastery); Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery).
Clive Barker's Undying leans clearly harder on execution.
Clive Barker's Undying
Dual-wielding spells and guns under pressure
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Clive Barker's Undying leans a little harder on reads, though the gap is small.
Clive Barker's Undying
Horrors follow scripted patterns despite feeling malevolent
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Clive Barker's Undying leans a little harder on variance, though the gap is small.
Clive Barker's Undying
First-run scares and unknown manor secrets hide information
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.
Clive Barker's Undying
Spell upgrades and Scrye-revealed puzzles reward system mastery
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.