head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Pure Mechanics
The first online Mario Kart, infamous for the execution-heavy snaking technique dominating play.

Execution · Pure Mechanics
A top-down shooter testing aim and movement against relentless enemy hordes.
Mario Kart DS leans Execution (Pure Mechanics); Serious Sam's Bogus Detour leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart DS
Snaking demands relentless precise drift inputs
Serious Sam's Bogus Detour
Top-down aiming and crowd-dodging are the lead
Mario Kart DS leans a little harder on reads, though the gap is small.
Mario Kart DS
Online opponents punish predictable lines
Serious Sam's Bogus Detour
Enemy hordes follow scripted rushes, not adaptive
Mario Kart DS leans a little harder on variance, though the gap is small.
Mario Kart DS
Item RNG decides tight finishes
Serious Sam's Bogus Detour
Spawn timing and drops add some chaos
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart DS
Kart stats, lines, and snaking routes
Serious Sam's Bogus Detour
Weapon choice and arena positioning matter underneath
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.