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 handheld arcade-style international soccer game.

Execution · Practiced Mastery
The 3DS Mario Kart that added gliders, underwater driving, and kart customisation.
ISS Advance leans Execution (Practiced Mastery); Mario Kart 7 leans Execution (Practiced Mastery).
Mario Kart 7 leans a little harder on execution, though the gap is small.
ISS Advance
passing and shooting timing
Mario Kart 7
Drift boosts, gliding, and underwater control
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
ISS Advance
human opponents allow light prediction
Mario Kart 7
Online lobbies reward anticipating rivals' items
Mario Kart 7 leans a little harder on variance, though the gap is small.
ISS Advance
match outcome randomness
Mario Kart 7
Item luck shapes every race
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
ISS Advance
tactics and team management
Mario Kart 7
Kart customisation and track-specific 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.