head to head
vs
Command & Conquer: Red Alert 2vsRainbow Six Siege
Command & Conquer: Red Alert 2 leans Reads (Grand Arena); Rainbow Six Siege leans Reads (Grand Arena).
Command & Conquer: Red Alert 2Rainbow Six Siege
Axis by axis
Execution6 vs 7
Rainbow Six Siege leans harder on execution: Crisp aim required but TTK is unforgiving.
Reads7 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.
Optimization7 vs 6
Command & Conquer: Red Alert 2 leans harder on optimization: Build queues and power grid management are highly optimizable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.