head to head
vs
Audiosurf 2vsThumper
Audiosurf 2 leans Execution (Pure Mechanics); Thumper leans Execution (Pure Mechanics).
Audiosurf 2Thumper
Axis by axis
Execution7 vs 9
Thumper leans harder on execution: Split-second rhythm inputs at speed are the entire test
Reads1 vs 0
Audiosurf 2 leans harder on reads: no opponent, purely solo pattern execution
Variance2 vs 1
Audiosurf 2 leans harder on variance: song choice creates varied but fixed patterns
Optimization4 vs 4
Even - both lean on optimization about the same.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.