head to head
StarCraft II: Wings of Liberty asks more than Mortal Kombat 9, and the gap is optimization.

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

Execution · Grand Arena
Real-time strategy where hands, reads, and build optimization all matter at the top.
Mortal Kombat 9 leans Execution (Grand Arena); StarCraft II: Wings of Liberty leans Execution (Grand Arena).
StarCraft II: Wings of Liberty 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 II: Wings of Liberty
APM, macro, micro-control under pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Mortal Kombat 9
Opponents adapt wake-up and zoning tendencies across a match
StarCraft II: Wings of Liberty
1v1 ladder vs adaptive humans modeling you
StarCraft II: Wings of Liberty leans a little harder on variance, though the gap is small.
Mortal Kombat 9
No RNG; all outcomes are player-driven
StarCraft II: Wings of Liberty
map spawns minor; mostly known
StarCraft II: Wings of Liberty leans clearly harder on optimization.
Mortal Kombat 9
Matchup knowledge and X-Ray confirm windows reward structured study
StarCraft II: Wings of Liberty
build orders, economy curves heavily solved
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.