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

Execution · Pure Mechanics
Pure motion accuracy against fixed choreography.

Execution · Pure Mechanics
A classic 2D Mario platformer rewarding tight jump execution above all.
Just Dance 2022 leans Execution (Pure Mechanics); New Super Mario Bros. U Deluxe leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Just Dance 2022
Matching choreography precisely is the entire score
New Super Mario Bros. U Deluxe
precise jump and platforming execution
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Just Dance 2022
The routine never adapts to you
New Super Mario Bros. U Deluxe
fixed enemy patterns, no adaptation
New Super Mario Bros. U Deluxe leans a little harder on variance, though the gap is small.
Just Dance 2022
Identical choreography every play
New Super Mario Bros. U Deluxe
minor enemy placement randomness
New Super Mario Bros. U Deluxe leans a little harder on optimization, though the gap is small.
Just Dance 2022
Memorising routines helps but motion accuracy dominates
New Super Mario Bros. U Deluxe
level routing for speed/collectibles
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.