head to head
Test Drive Unlimited 2 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
An open-world racing MMO about collecting cars and cruising Ibiza and Hawaii.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Test Drive Unlimited 2 leans Execution (Practiced Mastery).
Test Drive Unlimited 2 leans clearly harder on execution.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Test Drive Unlimited 2
Open-road car control decides races
Test Drive Unlimited 2 leans clearly harder on reads.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Test Drive Unlimited 2
Online rivals add mild jockeying
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
Test Drive Unlimited 2
Traffic and weather add small noise
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
Test Drive Unlimited 2
Car choice, upgrades, and route knowledge compound
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.