head to head
vs
Crackdown 2vsHalf-Life
Crackdown 2 leans Optimization (Practiced Mastery); Half-Life leans Execution (Practiced Mastery).
Crackdown 2Half-Life
Axis by axis
Execution5 vs 6
Half-Life leans harder on execution: Combat aim and infamous platforming sections
Reads1 vs 0
Crackdown 2 leans harder on reads: Co-op and PvP modes add faint human friction
Variance2 vs 2
Even - both lean on variance about the same.
Optimization6 vs 6
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.