head to head
vs
Halo: ReachvsNBA Live 08
Halo: Reach leans Execution (Practiced Mastery); NBA Live 08 leans Execution (Competitive PvP).
Halo: ReachNBA Live 08
Axis by axis
Execution7 vs 6
Halo: Reach leans harder on execution: DMR precision and armour-ability timing
Reads4 vs 5
NBA Live 08 leans harder on reads: Human opponents disguise plays and adapt defensive schemes
Variance2 vs 2
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.