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
Memorising arcade enemy patterns and executing clean crowd control.
New Super Mario Bros. leans Execution (Practiced Mastery); The King of Dragons 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
The King of Dragons
Spacing, blocking and crowd timing carry one-credit runs
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
The King of Dragons
Arcade enemies follow fixed patterns
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
The King of Dragons
Deterministic waves once memorised
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
The King of Dragons
Enemy patterns and character upgrades route a learnable clear
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.