head to head
vs
Inertial DriftvsMetal Slug 4
Inertial Drift leans Execution (Pure Mechanics); Metal Slug 4 leans Execution (Pure Mechanics).
Inertial DriftMetal Slug 4
Axis by axis
Execution9 vs 8
Inertial Drift leans harder on execution: Twin-stick drift mechanic demands precise asymmetric input simultaneously
Reads1 vs 0
Inertial Drift leans harder on reads: Primarily single-player time-attack; minimal opponent interaction
Variance1 vs 1
Even - both lean on variance about the same.
Optimization5 vs 5
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.