head to head
Grand Theft Auto: San Andreas asks more than The Order: 1886, and the gap is optimization.

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

Execution · Practiced Mastery
A cinematic Victorian cover shooter about knights hunting half-breeds with exotic weaponry.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); The Order: 1886 leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
The Order: 1886
Standard cover shooting with quick-time events
The Order: 1886 leans a little harder on reads, though the gap is small.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
The Order: 1886
Scripted setpiece enemies
Grand Theft Auto: San Andreas leans a little harder on variance, though the gap is small.
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
The Order: 1886
Heavily authored, nothing random
Grand Theft Auto: San Andreas leans clearly harder on optimization.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
The Order: 1886
Linear encounters, light tactical 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.