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 loot-heavy open-world action RPG with flashy combo combat and a famously breakable crafting system.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Kingdoms of Amalur: Reckoning leans Optimization (Practiced Mastery).
Kingdoms of Amalur: Reckoning leans a little harder on execution, though the gap is small.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Kingdoms of Amalur: Reckoning
Dodge-and-combo combat, forgiving timing
Kingdoms of Amalur: Reckoning leans a little harder on reads, though the gap is small.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Kingdoms of Amalur: Reckoning
Enemies never adapt to your habits
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Kingdoms of Amalur: Reckoning
Loot rolls add light randomness
Kingdoms of Amalur: Reckoning 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
Kingdoms of Amalur: Reckoning
Destiny builds and crafting trivialise difficulty
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.