head to head
StarCraft asks more than FIFA 20, and the gap is optimization.

Execution · Grand Arena
A football sim where reading opponents and precise execution both decide matches.

Optimization · Grand Arena
A real-time strategy classic where perfected build orders and mechanical speed decide most matches.
FIFA 20 leans Execution (Grand Arena); StarCraft 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.
FIFA 20
precise passing, dribbling, and shot timing
StarCraft
APM and micro control ceiling is huge
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
FIFA 20
reading human opponent tactics live
StarCraft
scouting and predicting human opponent builds
FIFA 20 leans a little harder on variance, though the gap is small.
FIFA 20
minor ball physics and injury randomness
StarCraft
minimal hidden info beyond fog of war
StarCraft leans clearly harder on optimization.
FIFA 20
formations and player builds solvable
StarCraft
build orders and economy are near-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.