head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Modern 2D Mario platformer built on classic jump precision and hidden exits.

Execution · Practiced Mastery
Tight handheld platforming plus route knowledge across a fixed explorable world.
New Super Mario Bros. leans Execution (Practiced Mastery); Shantae leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
New Super Mario Bros.
Jump timing and momentum control carry every level
Shantae
Hair-whip timing and tight platforming on Game Boy hardware
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
New Super Mario Bros.
Enemies follow fixed scripted patterns
Shantae
Bosses run fixed patterns with no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
New Super Mario Bros.
Levels fully deterministic once seen
Shantae
World layout is fixed once explored
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
New Super Mario Bros.
Secret exits, star coins, and route knowledge
Shantae
Dance transformations and route knowledge unlock progress
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.