head to head
vs
Gran Turismo 4vsTrackmania
Gran Turismo 4 leans Execution (Practiced Mastery); Trackmania leans Execution (Pure Mechanics).
Gran Turismo 4Trackmania
Axis by axis
Execution8 vs 10
Trackmania leans harder on execution: Pure input precision over deterministic tracks defines everything.
Reads0 vs 0
Even - both lean on reads about the same.
Variance1 vs 0
Gran Turismo 4 leans harder on variance: Deterministic outside slight tyre wear modelling
Optimization7 vs 7
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.