head to head
Neither is simply harder - they are hard in different places. Mortal Kombat 9 demands more reads; StarCraft demands more optimization.

Execution · Grand Arena
A combo-heavy fighter where landing punishes and reading opponent wake-up choices decide rounds.

Optimization · Grand Arena
A real-time strategy classic where perfected build orders and mechanical speed decide most matches.
Mortal Kombat 9 leans Execution (Grand Arena); StarCraft leans Optimization (Grand Arena).
Mortal Kombat 9 leans a little harder on execution, though the gap is small.
Mortal Kombat 9
X-Ray setups and long combo strings require tight execution
StarCraft
APM and micro control ceiling is huge
Mortal Kombat 9 leans clearly harder on reads.
Mortal Kombat 9
Opponents adapt wake-up and zoning tendencies across a match
StarCraft
scouting and predicting human opponent builds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 9
No RNG; all outcomes are player-driven
StarCraft
minimal hidden info beyond fog of war
StarCraft leans clearly harder on optimization.
Mortal Kombat 9
Matchup knowledge and X-Ray confirm windows reward structured study
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.