head to head
vs
Call of Duty: Modern Warfare 3vsRainbow Six Siege
Call of Duty: Modern Warfare 3 leans Execution (Pure Mechanics); Rainbow Six Siege leans Reads (Grand Arena).
Call of Duty: Modern Warfare 3Rainbow Six Siege
Axis by axis
Execution9 vs 7
Call of Duty: Modern Warfare 3 leans harder on execution: aim and reflexes decide most engagements
Reads6 vs 9
Rainbow Six Siege leans harder on reads: Defenders adapt holds; attackers fake and bait.
Variance2 vs 2
Even - both lean on variance about the same.
Optimization4 vs 6
Rainbow Six Siege leans harder on optimization: Operator picks, gadget placement, and utility usage.
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.