head to head
vs
Guitar Hero: Van Halenvsosu!
Guitar Hero: Van Halen leans Execution (Pure Mechanics); osu! leans Execution (Pure Mechanics).
Guitar Hero: Van Halenosu!
Axis by axis
Execution9 vs 10
osu! leans harder on execution: Pixel-perfect cursor aim and tapping at extreme speeds
Reads0 vs 0
Even - both lean on reads about the same.
Variance0 vs 0
Even - both lean on variance about the same.
Optimization3 vs 2
Guitar Hero: Van Halen leans harder on optimization: Star power phrasing is a small solved layer
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.