head to head
Warcraft III: Reign of Chaos asks more than Marvel Rivals, and the gap is optimization.

Execution · Grand Arena
Hero shooter with team-up ability synergies.

Optimization · Grand Arena
Blizzard's hero-centric RTS where build-order theory meets surgical unit micro against humans.
Marvel Rivals leans Execution (Grand Arena); Warcraft III: Reign of Chaos leans Optimization (Grand Arena).
Marvel Rivals leans a little harder on execution, though the gap is small.
Marvel Rivals
Hero aim and ability timing
Warcraft III: Reign of Chaos
Micro of heroes and units decides fights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel Rivals
Team-fight cooldown trading is prediction
Warcraft III: Reign of Chaos
Scouting and out-guessing a human opponent's tech
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Marvel Rivals
Map and team comp roll affects
Warcraft III: Reign of Chaos
Creep routes and item drops add randomness
Warcraft III: Reign of Chaos leans clearly harder on optimization.
Marvel Rivals
Hero synergies and team-up combos deep
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.