head to head
Dune 2000 asks more than Grand Theft Auto: San Andreas, and the gap is reads.

Optimization · Practiced Mastery
Spice economy management and build-order knowledge with modest micro demands.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.
Dune 2000 leans Optimization (Practiced Mastery); Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery).
Dune 2000 leans a little harder on execution, though the gap is small.
Dune 2000
Unit micro and build speed matter at competitive pace
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Dune 2000 leans clearly harder on reads.
Dune 2000
Human skirmishes add some build-order mind games
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Dune 2000
Fog of war hides enemy composition until scouted
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Dune 2000 leans a little harder on optimization, though the gap is small.
Dune 2000
Spice economy and build orders decide most games
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.