head to head
vs
Bus Simulator 18vsSpiritfarer
Bus Simulator 18 leans Optimization (Practiced Mastery); Spiritfarer leans Optimization (Pure Optimization).
Bus Simulator 18Spiritfarer
Axis by axis
Execution3 vs 2
Bus Simulator 18 leans harder on execution: Careful driving and stopping need modest control
Reads0 vs 0
Even - both lean on reads about the same.
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.