head to head
Grand Theft Auto: San Andreas asks more than Kane & Lynch: Dead Men, 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 gritty crime shooter following two doomed mercenaries through botched heists.
Grand Theft Auto: San Andreas leans Optimization (Practiced Mastery); Kane & Lynch: Dead Men leans Execution (Practiced Mastery).
Kane & Lynch: Dead Men leans a little harder on execution, though the gap is small.
Grand Theft Auto: San Andreas
Flying school and drive-bys need decent hands
Kane & Lynch: Dead Men
Cover shooting accuracy under pressure
Kane & Lynch: Dead Men leans a little harder on reads, though the gap is small.
Grand Theft Auto: San Andreas
Gang AI is scripted, never adaptive
Kane & Lynch: Dead Men
Fragile Alliance betrayals add faint human guessing
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
Kane & Lynch: Dead Men
Set-piece encounters vary little
Grand Theft Auto: San Andreas leans clearly harder on optimization.
Grand Theft Auto: San Andreas
Stats, gym, weapon skill, and routes reward systematic play
Kane & Lynch: Dead Men
Squad orders and encounter knowledge
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.