head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

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

Optimization · Practiced Mastery
A tower defense FPS hybrid about placing defenses and gunning down waves.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Iron Grip: Warlord leans Optimization (Practiced Mastery).
Iron Grip: Warlord leans a little harder on execution, though the gap is small.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Iron Grip: Warlord
First-person shooting demands some aim under pressure
Iron Grip: Warlord leans a little harder on reads, though the gap is small.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Iron Grip: Warlord
AI invaders follow scripted waves, no adaptation
Iron Grip: Warlord leans a little harder on variance, though the gap is small.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Iron Grip: Warlord
Wave composition adds some uncertainty
Iron Grip: Warlord 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
Iron Grip: Warlord
Tower placement and resource management defend the city
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.