head to head
StarCraft asks more than Iron Harvest, and the gap is optimization.

Optimization · Grand Arena
Diesel-punk CoH-style RTS with mechs and infantry cover.

Optimization · Grand Arena
A real-time strategy classic where perfected build orders and mechanical speed decide most matches.
Iron Harvest leans Optimization (Grand Arena); StarCraft leans Optimization (Grand Arena).
StarCraft leans a little harder on execution, though the gap is small.
Iron Harvest
squad micro and cover
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.
Iron Harvest
MP flanks vs humans
StarCraft
scouting and predicting human opponent builds
Iron Harvest leans a little harder on variance, though the gap is small.
Iron Harvest
fog of war
StarCraft
minimal hidden info beyond fog of war
StarCraft leans clearly harder on optimization.
Iron Harvest
build orders and unit comps
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.