head to head
Battlefield: Bad Company asks more than Grand Theft Auto: San Andreas, and the gap is reads.

Execution · Practiced Mastery
A destruction-driven military shooter where squads level buildings around objectives.

Optimization · Practiced Mastery
A sprawling open-world crime epic with RPG-style character stats across a whole state.
Battlefield: Bad Company leans Execution (Practiced Mastery); Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery).
Battlefield: Bad Company leans clearly harder on execution.
Battlefield: Bad Company
Vehicle and infantry gunskill across big maps
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Battlefield: Bad Company leans clearly harder on reads.
Battlefield: Bad Company
Predicting human squad pushes on objectives
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Battlefield: Bad Company leans a little harder on variance, though the gap is small.
Battlefield: Bad Company
Destruction and large lobbies create chaos
Grand Theft Auto: San Andreas
Territory wars and traffic add light randomness
Grand Theft Auto: San Andreas leans a little harder on optimization, though the gap is small.
Battlefield: Bad Company
Class roles and objective flow are learnable
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.