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

Execution · Pure Mechanics
VR rhythm game about slicing color-coded blocks to music with lightsabers.

Execution · Pure Mechanics
Series peak whose hardest charts became a benchmark for human finger speed.
Beat Saber leans Execution (Pure Mechanics); Guitar Hero III: Legends of Rock 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.
Beat Saber
Pure full-body rhythm precision at speed
Guitar Hero III: Legends of Rock
Through the Fire and Flames defines a hands ceiling
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Beat Saber
No opponent of any kind
Guitar Hero III: Legends of Rock
Charts are fixed; boss battles are gimmicks
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Beat Saber
Patterns are fully known and fixed
Guitar Hero III: Legends of Rock
Deterministic note charts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Beat Saber
Swing-angle scoring technique and map memorization
Guitar Hero III: Legends of Rock
Squeeze paths and star power optimization for scores
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.