head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Reads · Grand Arena
Three-faction Cold-War RTS with naval combat where faction asymmetry and multi-front pressure are the core tests.

Execution · Competitive PvP
The beloved last EA baseball sim, built around the pitcher-batter guessing duel.
Command & Conquer: Red Alert 3 leans Reads (Grand Arena); MVP Baseball 2005 leans Execution (Competitive PvP).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Red Alert 3
Naval and air micro alongside base-building taxes player bandwidth
MVP Baseball 2005
Hitter's eye timing and pitch meter reward precision
Command & Conquer: Red Alert 3 leans a little harder on reads, though the gap is small.
Command & Conquer: Red Alert 3
Three-faction asymmetry means opponent choices must be constantly predicted
MVP Baseball 2005
Pitcher-batter guessing versus humans is genuine prediction
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Red Alert 3
Ore spawning and naval choke variance add moderate uncertainty
MVP Baseball 2005
Batted-ball outcomes carry real randomness
Command & Conquer: Red Alert 3 leans a little harder on optimization, though the gap is small.
Command & Conquer: Red Alert 3
Production order and defensive placement are learnable but more flexible
MVP Baseball 2005
Lineups, matchups, and franchise management are solvable
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.