head to head
vs
Gears of War 2vsHalo 5: Guardians
Gears of War 2 leans Execution (Practiced Mastery); Halo 5: Guardians leans Execution (Pure Mechanics).
Gears of War 2Halo 5: Guardians
Axis by axis
Execution7 vs 8
Halo 5: Guardians leans harder on execution: Thrusters, clamber, and aim raise the ceiling
Reads4 vs 5
Halo 5: Guardians leans harder on reads: Arena ranked play is human-versus-human
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.