head to head
vs
Battlefield 3vsHalo: Reach
Battlefield 3 leans Execution (Competitive PvP); Halo: Reach leans Execution (Practiced Mastery).
Battlefield 3Halo: Reach
Axis by axis
Execution7 vs 7
Even - both lean on execution about the same.
Reads5 vs 4
Battlefield 3 leans harder on reads: Human teams adapt routes and armor pushes
Variance3 vs 2
Battlefield 3 leans harder on variance: Spawns, destruction, and vehicle drops shuffle engagements
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.