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

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

Reads · Mind & Math
Objective-driven MOBA with shared team XP.
Command & Conquer: Red Alert 2 leans Reads (Grand Arena); Heroes of the Storm leans Reads (Mind & Math).
Command & Conquer: Red Alert 2 leans a little harder on execution, though the gap is small.
Command & Conquer: Red Alert 2
Superweapon timing and unit grouping require practiced multitasking
Heroes of the Storm
Skillshots and rotations require hands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Command & Conquer: Red Alert 2
Opponent faction and rush timing must be scouted and predicted
Heroes of the Storm
Team-fight cooldown trading is prediction
Heroes of the Storm leans a little harder on variance, though the gap is small.
Command & Conquer: Red Alert 2
Map layout is fixed; very little hidden RNG in unit behavior
Heroes of the Storm
Map objectives and merc camps vary
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
Heroes of the Storm
Talent picks and team comps deep
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.