head to head
Counter-Strike: Global Offensive asks more than Quake Live, and the gap is variance.

Execution · Competitive PvP
Definitive competitive tactical FPS balancing aim mastery with team strategy.

Execution · Pure Mechanics
Browser-era refinement of Quake III, the benchmark for raw arena FPS skill.
Counter-Strike: Global Offensive leans Execution (Competitive PvP); Quake Live leans Execution (Pure Mechanics).
Quake Live leans a little harder on execution, though the gap is small.
Counter-Strike: Global Offensive
Spray control and flick precision at the top
Quake Live
Rail aim and strafe-jump movement are the purest hand test
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Counter-Strike: Global Offensive
Anti-stratting and mid-round adaptation
Quake Live
Duels are mind games against an adapting human opponent
Counter-Strike: Global Offensive leans clearly harder on variance.
Counter-Strike: Global Offensive
Information hidden until contact
Quake Live
Symmetric arenas, full information, almost no randomness
Quake Live leans a little harder on optimization, though the gap is small.
Counter-Strike: Global Offensive
Utility lineups, economy, and default strats
Quake Live
Item timing and map control are deeply solvable
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.