head to head
vs
Call of Duty: Black Ops IIvsTom Clancy's Rainbow Six: Vegas
Call of Duty: Black Ops II leans Execution (Pure Mechanics); Tom Clancy's Rainbow Six: Vegas leans Execution (Competitive PvP).
Call of Duty: Black Ops IITom Clancy's Rainbow Six: Vegas
Axis by axis
Execution8 vs 7
Call of Duty: Black Ops II leans harder on execution: Snap aim and movement speed decide split-second gunfights
Reads5 vs 5
Even - both lean on reads about the same.
Variance3 vs 2
Call of Duty: Black Ops II leans harder on variance: Spawn flips and scorestreak chaos inject randomness
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.