head to head
Mario Kart DS asks more than Half-Life 2, and the gap is variance.

Execution · Pure Mechanics
Landmark FPS built on physics puzzles and tight gunplay.

Execution · Pure Mechanics
The first online Mario Kart, infamous for the execution-heavy snaking technique dominating play.
Half-Life 2 leans Execution (Pure Mechanics); Mario Kart DS leans Execution (Pure Mechanics).
Mario Kart DS leans clearly harder on execution.
Half-Life 2
Gravity gun and shooting demand precision.
Mario Kart DS
Snaking demands relentless precise drift inputs
Mario Kart DS leans clearly harder on reads.
Half-Life 2
Combine AI scripted, non-adaptive.
Mario Kart DS
Online opponents punish predictable lines
Mario Kart DS leans clearly harder on variance.
Half-Life 2
Almost no randomness.
Mario Kart DS
Item RNG decides tight finishes
Mario Kart DS leans clearly harder on optimization.
Half-Life 2
Linear progression with no builds.
Mario Kart DS
Kart stats, lines, and snaking routes
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.