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
Cold-War base-builder where tight production queues and superweapon races define competitive play.

Optimization · Grand Arena
Streamlined mobile MOBA built around fast 5v5 matches and macro objective play.
Command & Conquer: Red Alert 2 leans Reads (Grand Arena); Mobile Legends: Bang Bang leans Optimization (Grand Arena).
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 2
Superweapon timing and unit grouping require practiced multitasking
Mobile Legends: Bang Bang
Touch-screen skillshots and combos, simplified mechanics
Command & Conquer: Red Alert 2 leans a little harder on reads, though the gap is small.
Command & Conquer: Red Alert 2
Opponent faction and rush timing must be scouted and predicted
Mobile Legends: Bang Bang
Predicting human rotations, ganks, and objective timing
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 2
Map layout is fixed; very little hidden RNG in unit behavior
Mobile Legends: Bang Bang
Fog of war hides enemy positions briefly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Red Alert 2
Build queues and power grid management are highly optimizable
Mobile Legends: Bang Bang
Builds, drafting, and macro objective control decide games
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.