head to head
Total War: Shogun 2 asks more than Grand Theft Auto: San Andreas, and the gap is reads.

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

Optimization · Practiced Mastery
Mastering samurai unit cohesion and clan-specific economic chains across feudal Japan.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Total War: Shogun 2 leans Optimization (Practiced Mastery).
Total War: Shogun 2 leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Total War: Shogun 2
Samurai unit micro, zen arts timing, and castle sieges reward sharp play
Total War: Shogun 2 leans clearly harder on reads.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Total War: Shogun 2
AI daimyo follow scripted clan doctrines; human opponents require reads
Total War: Shogun 2 leans clearly harder on variance.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Total War: Shogun 2
Metsuke agent skill rolls and random farm yields add moderate unknowns
Total War: Shogun 2 leans clearly harder on optimization.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
Total War: Shogun 2
Clan-specific mastery paths and trade port chains are the core solvable layer
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.