head to head
vs
DrivervsRock Band 2
Driver leans Execution (Pure Mechanics); Rock Band 2 leans Execution (Pure Mechanics).
DriverRock Band 2
Axis by axis
Execution7 vs 8
Rock Band 2 leans harder on execution: Guitar, drum, and vocal accuracy on expert charts
Reads0 vs 0
Even - both lean on reads about the same.
Variance1 vs 0
Driver leans harder on variance: Traffic adds mild unpredictability
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.