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
Navigating hand-painted levels in rhythm with fixed musical hazard patterns.

Execution · Practiced Mastery
Isometric movement control while herding Flickies along memorised routes.
Beatbuddy: Tale of the Guardians leans Execution (Practiced Mastery); Sonic 3D Blast 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.
Beatbuddy: Tale of the Guardians
Moving and dodging on the beat carries every section
Sonic 3D Blast
Isometric momentum control and Flicky herding need precise movement
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Beatbuddy: Tale of the Guardians
Hazards pulse to fixed musical patterns
Sonic 3D Blast
Robotnik bosses run fixed patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Beatbuddy: Tale of the Guardians
Levels and rhythms are fully deterministic
Sonic 3D Blast
Flicky and badnik placements never change
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Beatbuddy: Tale of the Guardians
Puzzle rooms and route memory add a light systems layer
Sonic 3D Blast
Routing each zone for Flickies and emeralds is learnable
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.