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
The 3DS Mario Kart that added gliders, underwater driving, and kart customisation.

Execution · Practiced Mastery
A basketball sim testing shot timing, play calling, and reading human opponents.
Mario Kart 7 leans Execution (Practiced Mastery); Tecmo Super NBA Basketball leans Execution (Practiced Mastery).
Mario Kart 7 leans a little harder on execution, though the gap is small.
Mario Kart 7
Drift boosts, gliding, and underwater control
Tecmo Super NBA Basketball
Shot and steal timing decides plays
Tecmo Super NBA Basketball leans a little harder on reads, though the gap is small.
Mario Kart 7
Online lobbies reward anticipating rivals' items
Tecmo Super NBA Basketball
Human opponents fake and adjust defenses
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart 7
Item luck shapes every race
Tecmo Super NBA Basketball
Shot success and stat rolls add randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Mario Kart 7
Kart customisation and track-specific routes
Tecmo Super NBA Basketball
Play calling and roster management matter
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.