head to head
vs
Call of Duty: Modern Warfare 3vsTom Clancy's Rainbow Six: Vegas
Call of Duty: Modern Warfare 3 leans Execution (Pure Mechanics); Tom Clancy's Rainbow Six: Vegas leans Execution (Competitive PvP).
Call of Duty: Modern Warfare 3Tom Clancy's Rainbow Six: Vegas
Axis by axis
Execution9 vs 7
Call of Duty: Modern Warfare 3 leans harder on execution: aim and reflexes decide most engagements
Reads6 vs 5
Call of Duty: Modern Warfare 3 leans harder on reads: predicting human opponent positioning and habits
Variance2 vs 2
Even - both lean on variance about the same.
Optimization4 vs 5
Tom Clancy's Rainbow Six: Vegas leans harder on optimization: Room-entry planning and map knowledge are studyable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.