head to head
vs
Rock Band 2vsSpin Rhythm XD
Rock Band 2 leans Execution (Pure Mechanics); Spin Rhythm XD leans Execution (Pure Mechanics).
Rock Band 2Spin Rhythm XD
Axis by axis
Execution8 vs 9
Spin Rhythm XD leans harder on execution: Wheel-spinning, flicks, and taps demand analog precision
Reads0 vs 0
Even - both lean on reads about the same.
Variance0 vs 0
Even - both lean on variance about the same.
Optimization4 vs 3
Rock Band 2 leans harder on optimization: Overdrive activation paths decide leaderboard scores
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.