head to head
vs
Command & Conquer: Red Alert 2vsStarCraft II: Wings of Liberty
Command & Conquer: Red Alert 2 leans Reads (Grand Arena); StarCraft II: Wings of Liberty leans Execution (Grand Arena).
Command & Conquer: Red Alert 2StarCraft II: Wings of Liberty
Axis by axis
Execution6 vs 9
StarCraft II: Wings of Liberty leans harder on execution: APM, macro, micro-control under pressure
Reads7 vs 8
StarCraft II: Wings of Liberty leans harder on reads: 1v1 ladder vs adaptive humans modeling you
Variance2 vs 2
Even - both lean on variance about the same.
Optimization7 vs 8
StarCraft II: Wings of Liberty leans harder on optimization: build orders, economy curves heavily solved
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.