head to head
Neither is simply harder - they are hard in different places. StarCraft demands more optimization; Valorant demands more execution.

Optimization · Grand Arena
A real-time strategy classic where perfected build orders and mechanical speed decide most matches.

Execution · Grand Arena
A tactical hero shooter decided by aim duels and adapting to human opponents.
StarCraft leans Optimization (Grand Arena); Valorant leans Execution (Grand Arena).
Valorant leans clearly harder on execution.
StarCraft
APM and micro control ceiling is huge
Valorant
One-tap aim and crosshair placement decide most duels.
Valorant leans a little harder on reads, though the gap is small.
StarCraft
scouting and predicting human opponent builds
Valorant
Humans constantly adapt peeks, fakes, and ability timings.
Valorant leans a little harder on variance, though the gap is small.
StarCraft
minimal hidden info beyond fog of war
Valorant
Light spray RNG and unknown enemy positions.
StarCraft leans clearly harder on optimization.
StarCraft
build orders and economy are near-solvable
Valorant
Agent comps, util usage, and economy are studyable theory.
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.