head to head
F-Zero XvsStuntman: Ignition
F-Zero X leans Execution (Pure Mechanics); Stuntman: Ignition leans Execution (Practiced Mastery).
F-Zero XStuntman: Ignition
Axis by axis
Execution8 vs 8
Even - both lean on execution about the same.
Reads1 vs 0
F-Zero X leans harder on reads: Rival AI is non-adaptive
Variance1 vs 1
Even - both lean on variance about the same.
Optimization5 vs 6
Stuntman: Ignition leans harder on optimization: Memorising each shoot's choreography is half the score
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.

