head to head
vs
Halo: ReachvsMario's Tennis
Halo: Reach leans Execution (Practiced Mastery); Mario's Tennis leans Execution (Competitive PvP).
Halo: ReachMario's Tennis
Axis by axis
Execution7 vs 6
Halo: Reach leans harder on execution: DMR precision and armour-ability timing
Reads4 vs 4
Even - both lean on reads about the same.
Variance2 vs 2
Even - both lean on variance about the same.
Optimization5 vs 4
Halo: Reach leans harder on optimization: Ability matchups and map knowledge
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.