head to head
vs
Command & Conquer: Red Alert 2vsSupreme Commander 2
Command & Conquer: Red Alert 2 leans Reads (Grand Arena); Supreme Commander 2 leans Optimization (Grand Arena).
Command & Conquer: Red Alert 2Supreme Commander 2
Axis by axis
Execution6 vs 6
Even - both lean on execution about the same.
Reads7 vs 6
Command & Conquer: Red Alert 2 leans harder on reads: Opponent faction and rush timing must be scouted and predicted
Variance2 vs 2
Even - both lean on variance about the same.
Optimization7 vs 8
Supreme Commander 2 leans harder on optimization: Economy ratios, build orders and research routing are deeply solvable
Two games can score the same on an axis and still test it in very different ways - read each rationale, not just the number.