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

Execution · Practiced Mastery
A competitive falling-block puzzle testing fast placement and combo chaining.

Execution · Pure Mechanics
The first online Mario Kart, infamous for the execution-heavy snaking technique dominating play.
Baku Baku leans Execution (Practiced Mastery); Mario Kart DS leans Execution (Pure Mechanics).
Mario Kart DS leans a little harder on execution, though the gap is small.
Baku Baku
Fast block placement under accelerating drop is the lead skill
Mario Kart DS
Snaking demands relentless precise drift inputs
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Baku Baku
Versus play has light read of opponent pace
Mario Kart DS
Online opponents punish predictable lines
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Baku Baku
Falling animal/food order is random but bounded
Mario Kart DS
Item RNG decides tight finishes
Baku Baku leans a little harder on optimization, though the gap is small.
Baku Baku
Matching animals to food efficiently chains optimal combos
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.