head to head
Warcraft III: Reign of Chaos asks more than Mortal Kombat X, and the gap is variance.

Execution · Grand Arena
A variation-based fighter where character specialisation choices and read-and-punish execution drive competitive outcomes.

Optimization · Grand Arena
Blizzard's hero-centric RTS where build-order theory meets surgical unit micro against humans.
Mortal Kombat X leans Execution (Grand Arena); Warcraft III: Reign of Chaos leans Optimization (Grand Arena).
Mortal Kombat X leans a little harder on execution, though the gap is small.
Mortal Kombat X
Variation-specific combo routes demand precise practice
Warcraft III: Reign of Chaos
Micro of heroes and units decides fights
Mortal Kombat X leans a little harder on reads, though the gap is small.
Mortal Kombat X
Reading opponent's variation choice and tendency shifts the matchup
Warcraft III: Reign of Chaos
Scouting and out-guessing a human opponent's tech
Warcraft III: Reign of Chaos leans clearly harder on variance.
Mortal Kombat X
No RNG; transparent match flow
Warcraft III: Reign of Chaos
Creep routes and item drops add randomness
Warcraft III: Reign of Chaos leans clearly harder on optimization.
Mortal Kombat X
Variation selection and optimal punish routes require systematic study
Warcraft III: Reign of Chaos
Build orders, creeping routes, and matchup theory run deep
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.